US3838512A - Razor blades - Google Patents
Razor blades Download PDFInfo
- Publication number
- US3838512A US3838512A US00241446A US24144672A US3838512A US 3838512 A US3838512 A US 3838512A US 00241446 A US00241446 A US 00241446A US 24144672 A US24144672 A US 24144672A US 3838512 A US3838512 A US 3838512A
- Authority
- US
- United States
- Prior art keywords
- max
- chromium
- alloy
- coating
- percent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000000576 coating method Methods 0.000 claims abstract description 61
- 229910000599 Cr alloy Inorganic materials 0.000 claims abstract description 58
- 239000011248 coating agent Substances 0.000 claims abstract description 50
- 150000004767 nitrides Chemical class 0.000 claims abstract description 26
- 229920000642 polymer Polymers 0.000 claims abstract description 12
- 238000005520 cutting process Methods 0.000 claims abstract description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 68
- 239000011651 chromium Substances 0.000 claims description 39
- 229910045601 alloy Inorganic materials 0.000 claims description 38
- 239000000956 alloy Substances 0.000 claims description 38
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 37
- 229910052804 chromium Inorganic materials 0.000 claims description 34
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 30
- 239000000788 chromium alloy Substances 0.000 claims description 29
- 229910000640 Fe alloy Inorganic materials 0.000 claims description 17
- 229910052742 iron Inorganic materials 0.000 claims description 17
- 229910052759 nickel Inorganic materials 0.000 claims description 15
- 238000005275 alloying Methods 0.000 claims description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- 229910052799 carbon Inorganic materials 0.000 claims description 10
- -1 polytetrafluoroethylene Polymers 0.000 abstract description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 abstract description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 abstract description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 16
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 9
- 229910052757 nitrogen Inorganic materials 0.000 description 9
- 239000010941 cobalt Substances 0.000 description 5
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 4
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 4
- 229910017052 cobalt Inorganic materials 0.000 description 4
- 229920001577 copolymer Polymers 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229910052750 molybdenum Inorganic materials 0.000 description 4
- 239000011733 molybdenum Substances 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- 238000004544 sputter deposition Methods 0.000 description 4
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 3
- 229910001260 Pt alloy Inorganic materials 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 150000002505 iron Chemical class 0.000 description 3
- 229910052748 manganese Inorganic materials 0.000 description 3
- 239000011572 manganese Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 229910000990 Ni alloy Inorganic materials 0.000 description 2
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 2
- RAFPTRANICFIFN-UHFFFAOYSA-N [Mo].[Cr].[Ni].[Mn].[Si].[C] Chemical compound [Mo].[Cr].[Ni].[Mn].[Si].[C] RAFPTRANICFIFN-UHFFFAOYSA-N 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 229910052741 iridium Inorganic materials 0.000 description 2
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 2
- 235000000396 iron Nutrition 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 229910052758 niobium Inorganic materials 0.000 description 2
- 239000010955 niobium Substances 0.000 description 2
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 2
- 229910000510 noble metal Inorganic materials 0.000 description 2
- 229910052762 osmium Inorganic materials 0.000 description 2
- SYQBFIAQOQZEGI-UHFFFAOYSA-N osmium atom Chemical compound [Os] SYQBFIAQOQZEGI-UHFFFAOYSA-N 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 229910052702 rhenium Inorganic materials 0.000 description 2
- WUAPFZMCVAUBPE-UHFFFAOYSA-N rhenium atom Chemical compound [Re] WUAPFZMCVAUBPE-UHFFFAOYSA-N 0.000 description 2
- 229910052703 rhodium Inorganic materials 0.000 description 2
- 239000010948 rhodium Substances 0.000 description 2
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 2
- 229910052707 ruthenium Inorganic materials 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 229910000531 Co alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- RQMIWLMVTCKXAQ-UHFFFAOYSA-N [AlH3].[C] Chemical compound [AlH3].[C] RQMIWLMVTCKXAQ-UHFFFAOYSA-N 0.000 description 1
- CDHIUGUFSXEIPV-UHFFFAOYSA-N [Mn].[Si].[Mo].[Cr].[Ni] Chemical compound [Mn].[Si].[Mo].[Cr].[Ni] CDHIUGUFSXEIPV-UHFFFAOYSA-N 0.000 description 1
- HLNIUTQKXQHJJV-UHFFFAOYSA-N [N].[S].[W] Chemical compound [N].[S].[W] HLNIUTQKXQHJJV-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910002065 alloy metal Inorganic materials 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- CXOWYMLTGOFURZ-UHFFFAOYSA-N azanylidynechromium Chemical compound [Cr]#N CXOWYMLTGOFURZ-UHFFFAOYSA-N 0.000 description 1
- CFJRGWXELQQLSA-UHFFFAOYSA-N azanylidyneniobium Chemical compound [Nb]#N CFJRGWXELQQLSA-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- FOCAHLGSDWHSAH-UHFFFAOYSA-N difluoromethanethione Chemical compound FC(F)=S FOCAHLGSDWHSAH-UHFFFAOYSA-N 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910000701 elgiloys (Co-Cr-Ni Alloy) Inorganic materials 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- DTSBBUTWIOVIBV-UHFFFAOYSA-N molybdenum niobium Chemical compound [Nb].[Mo] DTSBBUTWIOVIBV-UHFFFAOYSA-N 0.000 description 1
- BWDUFCSALZHSPQ-UHFFFAOYSA-N molybdenum niobium titanium Chemical compound [Ti][Nb][Mo] BWDUFCSALZHSPQ-UHFFFAOYSA-N 0.000 description 1
- ZPZCREMGFMRIRR-UHFFFAOYSA-N molybdenum titanium Chemical compound [Ti].[Mo] ZPZCREMGFMRIRR-UHFFFAOYSA-N 0.000 description 1
- 229910001120 nichrome Inorganic materials 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B21/00—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor
- B26B21/54—Razor-blades
- B26B21/58—Razor-blades characterised by the material
- B26B21/60—Razor-blades characterised by the material by the coating material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31678—Of metal
- Y10T428/31681—Next to polyester, polyamide or polyimide [e.g., alkyd, glue, or nylon, etc.]
Definitions
- RAZOR BLADES This invention relates to razor blades and to methods for their production.
- a razor blade having a discrete coating of nitride of an alloy of chromium (as herein defined) and if desired a discrete coating of an alloy of chromium (as herein defined) on and/or adjacenta cutting edge thereof.
- a discrete coating means a coating of a material which is the same as or different from that of the basic blade and when of the same material as the basic blade, the coating is additional thereto.
- the basic blade is preferably of steel.
- the chromium alloys which may be used include those of chromium with at least one element of Group VIII of the Periodic Table, for example iron, cobalt, nickel or a noble metal, i.e., ruthenium, rhodium, palladium, osmium, iridium or platinum, manganese, rhenium or two or more thereof. Some commercially available alloys may be used.
- the alloy contains more than 12 percent by weight of chromium.
- the chromium preferably constitutes more than 50 atomic percent of the alloy.
- an alloy of chromium is meant to include alloys of chromium with one or more of the specific metals hereinbefore set forth for use in such alloys.
- Small quantities of at least one further alloying element which may be either metallic or nonmetallic, may be present in the alloy in an amount which does not significantly adversely affect the shaving properties of the razor blades of the invention, for example not more than 5 atomic percent.
- chromium alloys are those alloys which are commonly referred to as stainless and these are generally stainless steels or stainless irons.
- Iron/chromium alloys which may be used should in general contain at least 12 percent by weight of chromium conveniently less than 30 percent by weight.
- a preferred class of iron/chromium alloys contain from 16 to 20 percent by weight of chromium with the balance being made up, for example, of from 6 to 12 percent by weight of nickel with the remainder being a major proportion of iron and possibly low concentrations of further alloying elements.
- One preferred alloy contains about 18 percent by weight of chromium and about 8 percent by weight of nickel with the balance iron and a low concentration of at least one further alloying element, for example carbon.
- an iron/chromium alloy is used herein to refer generally to alloys containing both iron and chromium and it is intended to include alloys which contain one or more further alloying elements. In general, however, the iron and chromium should together form a major portion of the iron/chromium alloy (i.e. at least 50 percent preferably more than percent by weight).
- the further alloying elements may be metallic or non-metallic.
- Metallic alloying elements may be selected, for example, from amongst the elements (other' than iron) of Group VIII of the Periodic Table, e.g., cobalt, nickel, ruthenium, rhodium, palladium, osmium, iridium or platinum, or from amongst other metallic elements such as, for example, titanium, zirconium, vanadium, niobium, tantalum, molybdenum, tungsten or manganese.
- the relative amounts of iron, chromium and, when present, one or more further alloying elements are preferably selected to provide alloys which are referred to in the metallurgical art as stainless. These alloys include stainless irons and stainless steels.
- the chromium should be present in an amount of at least 12 percent by weight in the iron/- chromium alloys.
- a preferred class of iron/chromium alloys for use'in the present invention contains from 16 to 20 percent by weight of chromium. However, up to 30 percent by weight or even more chromium may be present.
- the iron/chromium alloys used in the present invention should generally contain a major proportion of iron and chromium.
- the other alloying elements, when present will then constitute less than 50 percent, preferably less than 30 percent by weight, of the alloy.
- Carbon is preferably present in only small amounts, e.g., 0.1 percent by weight of the alloy, especially when the chromium content of the alloy is low (i.e. less than about 14 percent).
- a preferred class of iron/chromium alloys contains from 16 to 20 percent by weight of chromium with the balance being made up, for example, of from 6 to 12 percent by weight of nickel with the remainder being a major proportion of iron and possibly low concentrations of further alloying elements.
- One preferred alloy contains about 18 percent by weight of chromium and about 8 percent by weight of nickel with the balance iron and a low concentration of carbon.
- iron/chromium alloys which may be used may be selected from the alloys listed in Table I below.
- Aluminium l27r Chromium 0.10 max 1.0 max l.0 max 0.50 max ll.5/l4.0 (HO/0.30 0.l07 Carbon max. 0.08 max 0.08 max 0.80 max 0.50 max l2.0/l4.0 0.l0/0.30
- Nitrogen Other alloys which may be used include, for example a chromium/nickel alloy containing about 80 percent by weight of nickel (commonly referred to as Nichrome) and a chromium/cobalt/nickel alloy containing about 20 percent by weight of chromium, about 40 percent by weight of cobalt, about 15 percent by weight of nickel, about 7 percent by weight of molybdenum, about 2 percent by weight of manganese and 65 about 0.15 percent by weight of carbon with the balance being iron (an alloy also known as Elgiloy). Chromium/platinum alloys may also be used.
- the nitrided alloys of chromiii m may be? selected from the nitrides of the alloys of chromium hereinbe- 60 fore set forth.
- the composition may extend from l to 55 atomic percent nitrogen.
- the nitride of the alloy of chromium may form either a single coating on a blade, preferably having an outermost covering of a polymer of copolymer which improves the shaving characteristics of the blade, or it may be one of a plurality of coatings.
- the alloy of chromium may be present as a first coating on a razor blade base and the nitride of the alloy of chromium may be present as a coating upon the first coatmg.
- a chromium alloy is used as a first coat of a dual coated blade it is believed to act as an edge strengthening coating.
- the second coating is generally chosen to provide a better substrate for adhesion of a subsequently applied polymer coating and/or to facilitate crystallisation of the polymer coating, upon deposition, in a manner which results in an improved polymer coating.
- Two coatings other than a polymer or copolymer may be used and the outer of these two coatings is preferably a nitride of the alloy of chromium.
- the other coatings which are preferably other than a nitride of an alloy of chromium are preferably metallic, being either of a substantially pure metal (e.g. chromium) or an alloy thereof, for example an iron/chromium alloy as hereinbefore described.
- an alloy coating it is preferably the same alloy as that from which the nitride is derived.
- the alloy may be an iron/- chromium alloy of the type hereinbefore described and the nitride coating is then preferably derived from the same alloy.
- alloy and nitrided alloy coatings may be derived from chromium/platinum alloys.
- the iron/chromium alloy coatings and the nitrided coatings may be produced by known methods. lonsputtering methods have been found convenient although vapour deposition methods may, if desired, be used.
- a source of nitrogen is required to form the nitride and this may, for example be nitrogen alone or a gas containing nitrogen such as cracked ammonia or air.
- the gas composition can vary widely depending upon the alloy being deposited.
- the nitrogen or other nitrogencontaining gas may be diluted with an inert gas such as argon, for example with up to 95 volume percent of argon.
- Sputtering may be directcurr ehtor radio frec uency sputtering and, in the latter case, sputtering may be direct from a chromium alloy or a nitride of a chromium alloy in an inert atmosphere as appropriate.
- a pressure of from 0.1 to 10 microns of mercury may in general be used to effect sputtering.
- the chromium alloy coating and/or the nitride coating together with any further coating, other than the possible polymer or copolymer coating, should generally have a total thickness of not more than 500A and preferably from 50 to 450A, advantageously not more than 300A. When a plurality of coatings is used, each coating is preferably from 50 to 450A thick.
- An outer polymer coating may be applied to the blade having a nitrided chromium alloy coating by known methods.
- Any of the conventional polymer coatings used to improve the properties of razor blades may be used, for example those comprising polytetrafluoroethylene or a copolymer of thiocarbonyl fluoride and tetrafiuoroethylene.
- the blades according to the invention were generally preferred since they were found to give a more comfortable shave from the first shave.
- a razor blade having at least one cutting edge carrying a discrete coating of a prereacted nitride of an alloy of chromium containing at least 12 percent by weight of chromium.
- I nitride is a nitride of an iron/chromium alloy.
- a razor blade having a cutting edge, a first coating of an alloy of chromium on said cutting edge and a second coating of a prereacted nitride alloy of chr0- mium containing at least 12 percent by weight of chromium on said coating of an alloy of chromium.
- each discrete coating is from 50 to 450A thick.
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- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physical Vapour Deposition (AREA)
- Laminated Bodies (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1064971A GB1352241A (en) | 1971-04-13 | 1971-04-13 | Razor blades |
| GB430672 | 1972-01-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3838512A true US3838512A (en) | 1974-10-01 |
Family
ID=26239033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US00241446A Expired - Lifetime US3838512A (en) | 1971-04-13 | 1972-04-05 | Razor blades |
Country Status (19)
Cited By (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991018719A1 (en) * | 1990-06-08 | 1991-12-12 | The Gillette Company | Razor blade technology |
| US5305526A (en) * | 1992-02-14 | 1994-04-26 | Wilkinson Sword Gesellschaft Mit Beschrankter Haftung | Razor head, especially razor blade unit of a wet razor |
| USD353741S (en) | 1992-11-19 | 1994-12-27 | Coquereau Raoul J | Dinner plate containing an in-built well |
| US5497550A (en) * | 1991-11-15 | 1996-03-12 | The Gillette Company | Shaving system |
| US6090490A (en) * | 1997-08-01 | 2000-07-18 | Mascotech, Inc. | Zirconium compound coating having a silicone layer thereon |
| US6096426A (en) * | 1997-08-01 | 2000-08-01 | Mascotech, Inc. | Coating having the appearance of black chrome |
| US6103381A (en) * | 1997-08-01 | 2000-08-15 | Mascotech, Inc. | Coating having the appearance of black chrome with a silicone top layer |
| US6110532A (en) * | 1993-05-28 | 2000-08-29 | The Gillette Company | Method of coating cutting edges |
| US6168242B1 (en) | 1997-08-01 | 2001-01-02 | Mascotech, Inc. | Zirconium nitride coating having a top layer thereon |
| US6242100B1 (en) | 1997-08-01 | 2001-06-05 | Mascotech Coatings, Inc. | Chrome coating having a top layer thereon |
| US6277494B1 (en) | 1999-03-05 | 2001-08-21 | Mascotech, Inc. | Chrome coated article |
| WO2001064406A3 (en) * | 2000-02-29 | 2002-02-07 | Gillette Co | Razor blade technology |
| US6346327B1 (en) | 1997-08-01 | 2002-02-12 | Mascotech Coatings, Inc. | Chrome coated article |
| US6391457B1 (en) | 1999-12-23 | 2002-05-21 | Vapor Technologies, Inc. | Coated article |
| US6399219B1 (en) | 1999-12-23 | 2002-06-04 | Vapor Technologies, Inc. | Article having a decorative and protective coating thereon |
| US6488027B1 (en) | 1998-03-10 | 2002-12-03 | Novartis Ag | Powder inhaler |
| US20050089706A1 (en) * | 2002-01-29 | 2005-04-28 | Kazuya Urata | Surface treated doctor blade |
| US20050246904A1 (en) * | 2002-08-21 | 2005-11-10 | Koninklijke Philips Electronics N.V. | Cutting member having a superlattice coating |
| WO2006079360A1 (en) * | 2005-01-27 | 2006-08-03 | Bic Violex Sa | Razor blade, razor head, razor and method of manufacturing a razor blade |
| US20060201001A1 (en) * | 2003-07-15 | 2006-09-14 | Koninklijke Philips Electronics N.V. | Coated cutting member having a nitride hardened substrate |
| US20070124944A1 (en) * | 2005-11-30 | 2007-06-07 | Eveready Battery Company, Inc. | Razor blade and method of making it |
| US20080190758A1 (en) * | 2004-09-08 | 2008-08-14 | Vassilis Papachristos | Method of Deposition of a Layer on a Razor Blade Edge and Razor Blade |
| US20090025512A1 (en) * | 2007-07-25 | 2009-01-29 | John Madeira | Thin film coating of blades |
| WO2016057473A1 (en) | 2014-10-06 | 2016-04-14 | Edgewell Personal Care Brands, Llc | Method of shaping a surface coating on a razor blade |
| US9969094B2 (en) | 2014-10-06 | 2018-05-15 | Edgewell Personal Care Brands, Llc | Method of shaping a surface coating on a razor blade using centrifugal force |
| EP3639991A1 (en) | 2018-10-19 | 2020-04-22 | Edgewell Personal Care Brands, LLC | Razor blade and method of making it |
| WO2023028420A1 (en) | 2021-08-24 | 2023-03-02 | Edgewell Personal Care Brands, Llc | System and method for coating a blade |
| US11841836B2 (en) | 2021-01-04 | 2023-12-12 | Ownbackup Ltd. | Target environment data seeding |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1128618A1 (ru) * | 1982-10-10 | 1987-03-07 | Всесоюзный Научно-Исследовательский Инструментальный Институт | Материал износостойкого покрыти металлорежущего инструмента |
| DE3503105A1 (de) * | 1985-01-30 | 1986-07-31 | Leybold-Heraeus GmbH, 5000 Köln | Verfahren zum beschichten von maschinenteilen und werkzeugen mit hartstoffmaterial und durch das verfahren hergestellte maschinenteile und werkzeuge |
| US4769291A (en) * | 1987-02-02 | 1988-09-06 | The Boc Group, Inc. | Transparent coatings by reactive sputtering |
| JPH04368A (ja) * | 1990-04-17 | 1992-01-06 | Riken Corp | 耐摩耗性被膜及びその製造法 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1930388A (en) * | 1931-02-25 | 1933-10-10 | Thos Firth & John Brown Ltd | Process for hardening alloy steels |
| US2087051A (en) * | 1933-12-21 | 1937-07-13 | Gillette Safety Razor Co | Fine edge blade and method of making the same |
| US2452915A (en) * | 1947-06-27 | 1948-11-02 | Armco Steel Corp | Nitriding process |
| US3283117A (en) * | 1965-04-22 | 1966-11-01 | Philip Morris Inc | Method for coating cutting edges of sharpened instruments |
| GB1193067A (en) * | 1966-08-02 | 1970-05-28 | Wilkinson Sword Ltd | Improvements in Razor Blades. |
| GB1200165A (en) * | 1968-02-01 | 1970-07-29 | Gen Electric | Improvements in the hard surfacing of metal articles |
-
1971
- 1971-04-13 GB GB1064971A patent/GB1352241A/en not_active Expired
-
1972
- 1972-03-29 BE BE781399A patent/BE781399A/xx unknown
- 1972-03-31 LU LU65093D patent/LU65093A1/xx unknown
- 1972-04-01 DE DE19722216030 patent/DE2216030A1/de active Pending
- 1972-04-04 CA CA138,765,A patent/CA951600A/en not_active Expired
- 1972-04-04 CH CH487972A patent/CH553039A/fr not_active IP Right Cessation
- 1972-04-05 US US00241446A patent/US3838512A/en not_active Expired - Lifetime
- 1972-04-05 FR FR7211878A patent/FR2136174A5/fr not_active Expired
- 1972-04-05 IE IE431/72A patent/IE36250B1/xx unknown
- 1972-04-06 AU AU40821/72A patent/AU473368B2/en not_active Expired
- 1972-04-07 AR AR24136572A patent/AR201729A1/es active
- 1972-04-08 IT IT942772A patent/IT953363B/it active
- 1972-04-10 SE SE459872A patent/SE373776B/xx unknown
- 1972-04-11 TR TR1737472A patent/TR17374A/xx unknown
- 1972-04-11 PL PL1972154644A patent/PL83573B1/pl unknown
- 1972-04-12 IL IL3920372A patent/IL39203A/xx unknown
- 1972-04-12 RO RO7052072A patent/RO62302A/ro unknown
- 1972-04-12 BG BG020206A patent/BG20303A3/xx unknown
- 1972-04-12 DD DD16224972A patent/DD95336A5/xx unknown
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1930388A (en) * | 1931-02-25 | 1933-10-10 | Thos Firth & John Brown Ltd | Process for hardening alloy steels |
| US2087051A (en) * | 1933-12-21 | 1937-07-13 | Gillette Safety Razor Co | Fine edge blade and method of making the same |
| US2452915A (en) * | 1947-06-27 | 1948-11-02 | Armco Steel Corp | Nitriding process |
| US3283117A (en) * | 1965-04-22 | 1966-11-01 | Philip Morris Inc | Method for coating cutting edges of sharpened instruments |
| GB1193067A (en) * | 1966-08-02 | 1970-05-28 | Wilkinson Sword Ltd | Improvements in Razor Blades. |
| GB1200165A (en) * | 1968-02-01 | 1970-07-29 | Gen Electric | Improvements in the hard surfacing of metal articles |
Cited By (38)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991018719A1 (en) * | 1990-06-08 | 1991-12-12 | The Gillette Company | Razor blade technology |
| US5497550A (en) * | 1991-11-15 | 1996-03-12 | The Gillette Company | Shaving system |
| US5305526A (en) * | 1992-02-14 | 1994-04-26 | Wilkinson Sword Gesellschaft Mit Beschrankter Haftung | Razor head, especially razor blade unit of a wet razor |
| USD353741S (en) | 1992-11-19 | 1994-12-27 | Coquereau Raoul J | Dinner plate containing an in-built well |
| US6110532A (en) * | 1993-05-28 | 2000-08-29 | The Gillette Company | Method of coating cutting edges |
| KR100324081B1 (ko) * | 1993-05-28 | 2002-05-13 | 도날 비. 토빈 | 절삭부피복방법 |
| US6168242B1 (en) | 1997-08-01 | 2001-01-02 | Mascotech, Inc. | Zirconium nitride coating having a top layer thereon |
| US6103381A (en) * | 1997-08-01 | 2000-08-15 | Mascotech, Inc. | Coating having the appearance of black chrome with a silicone top layer |
| US6242100B1 (en) | 1997-08-01 | 2001-06-05 | Mascotech Coatings, Inc. | Chrome coating having a top layer thereon |
| US6096426A (en) * | 1997-08-01 | 2000-08-01 | Mascotech, Inc. | Coating having the appearance of black chrome |
| US6346327B1 (en) | 1997-08-01 | 2002-02-12 | Mascotech Coatings, Inc. | Chrome coated article |
| US6090490A (en) * | 1997-08-01 | 2000-07-18 | Mascotech, Inc. | Zirconium compound coating having a silicone layer thereon |
| US6488027B1 (en) | 1998-03-10 | 2002-12-03 | Novartis Ag | Powder inhaler |
| US6277494B1 (en) | 1999-03-05 | 2001-08-21 | Mascotech, Inc. | Chrome coated article |
| US6391457B1 (en) | 1999-12-23 | 2002-05-21 | Vapor Technologies, Inc. | Coated article |
| US6399219B1 (en) | 1999-12-23 | 2002-06-04 | Vapor Technologies, Inc. | Article having a decorative and protective coating thereon |
| US6684513B1 (en) | 2000-02-29 | 2004-02-03 | The Gillette Company | Razor blade technology |
| WO2001064406A3 (en) * | 2000-02-29 | 2002-02-07 | Gillette Co | Razor blade technology |
| US6866894B2 (en) | 2000-02-29 | 2005-03-15 | The Gillette Company | Razor blade technology |
| US20030121158A1 (en) * | 2000-02-29 | 2003-07-03 | The Gillette Company, A Delaware Corporation | Razor blade technology |
| US20050089706A1 (en) * | 2002-01-29 | 2005-04-28 | Kazuya Urata | Surface treated doctor blade |
| US7152526B2 (en) * | 2002-01-29 | 2006-12-26 | Nihon New Chrome Co., Ltd. | Surface treated doctor blade |
| US20050246904A1 (en) * | 2002-08-21 | 2005-11-10 | Koninklijke Philips Electronics N.V. | Cutting member having a superlattice coating |
| US20060201001A1 (en) * | 2003-07-15 | 2006-09-14 | Koninklijke Philips Electronics N.V. | Coated cutting member having a nitride hardened substrate |
| US9180599B2 (en) | 2004-09-08 | 2015-11-10 | Bic-Violex S.A. | Method of deposition of a layer on a razor blade edge and razor blade |
| US20080190758A1 (en) * | 2004-09-08 | 2008-08-14 | Vassilis Papachristos | Method of Deposition of a Layer on a Razor Blade Edge and Razor Blade |
| WO2006079360A1 (en) * | 2005-01-27 | 2006-08-03 | Bic Violex Sa | Razor blade, razor head, razor and method of manufacturing a razor blade |
| US20070124944A1 (en) * | 2005-11-30 | 2007-06-07 | Eveready Battery Company, Inc. | Razor blade and method of making it |
| US20090025512A1 (en) * | 2007-07-25 | 2009-01-29 | John Madeira | Thin film coating of blades |
| US20110209988A1 (en) * | 2007-07-25 | 2011-09-01 | John Madeira | Thin film coating of blades |
| US7966909B2 (en) | 2007-07-25 | 2011-06-28 | The Gillette Company | Process of forming a razor blade |
| WO2016057473A1 (en) | 2014-10-06 | 2016-04-14 | Edgewell Personal Care Brands, Llc | Method of shaping a surface coating on a razor blade |
| US9943879B2 (en) | 2014-10-06 | 2018-04-17 | Edgewell Personal Care Brands, Llc | Method of shaping a surface coating on a razor blade |
| US9969094B2 (en) | 2014-10-06 | 2018-05-15 | Edgewell Personal Care Brands, Llc | Method of shaping a surface coating on a razor blade using centrifugal force |
| EP3639991A1 (en) | 2018-10-19 | 2020-04-22 | Edgewell Personal Care Brands, LLC | Razor blade and method of making it |
| WO2020081763A1 (en) | 2018-10-19 | 2020-04-23 | Edgewell Personal Care Brands, Llc | Razor blade and method of making it |
| US11841836B2 (en) | 2021-01-04 | 2023-12-12 | Ownbackup Ltd. | Target environment data seeding |
| WO2023028420A1 (en) | 2021-08-24 | 2023-03-02 | Edgewell Personal Care Brands, Llc | System and method for coating a blade |
Also Published As
| Publication number | Publication date |
|---|---|
| AU4082172A (en) | 1973-10-11 |
| IL39203A0 (en) | 1972-06-28 |
| BE781399A (fr) | 1972-09-29 |
| FR2136174A5 (enrdf_load_stackoverflow) | 1972-12-22 |
| IL39203A (en) | 1975-04-25 |
| LU65093A1 (enrdf_load_stackoverflow) | 1972-07-11 |
| GB1352241A (en) | 1974-05-08 |
| DD95336A5 (enrdf_load_stackoverflow) | 1973-01-20 |
| IE36250L (en) | 1972-10-13 |
| IE36250B1 (en) | 1976-09-15 |
| TR17374A (tr) | 1975-03-24 |
| RO62302A (ro) | 1980-01-15 |
| DE2216030A1 (enrdf_load_stackoverflow) | 1972-10-26 |
| PL83573B1 (enrdf_load_stackoverflow) | 1975-12-31 |
| AR201729A1 (es) | 1975-04-15 |
| IT953363B (it) | 1973-08-10 |
| BG20303A3 (bg) | 1975-11-05 |
| CA951600A (en) | 1974-07-23 |
| SE373776B (enrdf_load_stackoverflow) | 1975-02-17 |
| CH553039A (fr) | 1974-08-30 |
| AU473368B2 (en) | 1976-06-17 |
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