CA1070717A - Sintered cermets for tool and wear applications - Google Patents
Sintered cermets for tool and wear applicationsInfo
- Publication number
- CA1070717A CA1070717A CA256,574A CA256574A CA1070717A CA 1070717 A CA1070717 A CA 1070717A CA 256574 A CA256574 A CA 256574A CA 1070717 A CA1070717 A CA 1070717A
- Authority
- CA
- Canada
- Prior art keywords
- composition
- transition metal
- sintering
- group
- weight 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
Links
- 239000000203 mixture Substances 0.000 claims abstract description 83
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 42
- 229910052751 metal Inorganic materials 0.000 claims abstract description 33
- 239000002184 metal Substances 0.000 claims abstract description 33
- 238000005245 sintering Methods 0.000 claims abstract description 32
- 238000005520 cutting process Methods 0.000 claims abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 26
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 25
- 229910052723 transition metal Inorganic materials 0.000 claims abstract description 24
- 150000004767 nitrides Chemical class 0.000 claims abstract description 19
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims abstract description 18
- 150000003624 transition metals Chemical class 0.000 claims abstract description 18
- -1 transition metal carbides Chemical class 0.000 claims abstract description 15
- 239000012298 atmosphere Substances 0.000 claims abstract description 8
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910045601 alloy Inorganic materials 0.000 claims description 16
- 239000000956 alloy Substances 0.000 claims description 16
- 150000001247 metal acetylides Chemical class 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 16
- 239000004615 ingredient Substances 0.000 claims description 13
- 238000005275 alloying Methods 0.000 claims description 12
- 150000002739 metals Chemical class 0.000 claims description 10
- 239000002131 composite material Substances 0.000 claims description 9
- 238000009826 distribution Methods 0.000 claims description 8
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 7
- 229910052804 chromium Inorganic materials 0.000 claims description 7
- 239000011651 chromium Substances 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 7
- 239000007789 gas Substances 0.000 claims description 7
- 239000011261 inert gas Substances 0.000 claims description 7
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 7
- 239000010937 tungsten Substances 0.000 claims description 7
- 229910052721 tungsten Inorganic materials 0.000 claims description 7
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 6
- 229910052750 molybdenum Inorganic materials 0.000 claims description 6
- 239000011733 molybdenum Substances 0.000 claims description 6
- 239000010936 titanium Substances 0.000 claims description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 229910052735 hafnium Inorganic materials 0.000 claims description 4
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 claims description 4
- 229910052758 niobium Inorganic materials 0.000 claims description 4
- 239000010955 niobium Substances 0.000 claims description 4
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 4
- 229910052715 tantalum Inorganic materials 0.000 claims description 4
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 229910052720 vanadium Inorganic materials 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 claims description 2
- 229910052726 zirconium Inorganic materials 0.000 claims description 2
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims 2
- 238000007792 addition Methods 0.000 abstract description 15
- 239000000843 powder Substances 0.000 abstract description 14
- 229910000601 superalloy Inorganic materials 0.000 abstract description 9
- 229910000831 Steel Inorganic materials 0.000 abstract description 8
- 239000010959 steel Substances 0.000 abstract description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 2
- 229910001018 Cast iron Inorganic materials 0.000 abstract 1
- 229910052593 corundum Inorganic materials 0.000 abstract 1
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 1
- 229910033181 TiB2 Inorganic materials 0.000 description 21
- 239000011195 cermet Substances 0.000 description 20
- QYEXBYZXHDUPRC-UHFFFAOYSA-N B#[Ti]#B Chemical group B#[Ti]#B QYEXBYZXHDUPRC-UHFFFAOYSA-N 0.000 description 16
- 238000003754 machining Methods 0.000 description 12
- 238000005452 bending Methods 0.000 description 8
- 239000000919 ceramic Substances 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000002826 coolant Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 229910002804 graphite Inorganic materials 0.000 description 4
- 239000010439 graphite Substances 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 239000003870 refractory metal Substances 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000001307 helium Substances 0.000 description 3
- 229910052734 helium Inorganic materials 0.000 description 3
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 3
- 229910001026 inconel Inorganic materials 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000005050 thermomechanical fatigue Methods 0.000 description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- 229910003862 HfB2 Inorganic materials 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000002860 competitive effect Effects 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000000280 densification Methods 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000007731 hot pressing Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 150000002823 nitrates Chemical class 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 2
- 229910019918 CrB2 Inorganic materials 0.000 description 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 1
- AEMRFAOFKBGASW-UHFFFAOYSA-N Glycolic acid Natural products OCC(O)=O AEMRFAOFKBGASW-UHFFFAOYSA-N 0.000 description 1
- CQGRLHBOVUGVEA-UHFFFAOYSA-N OOOOOOOOOOOOOOO Chemical compound OOOOOOOOOOOOOOO CQGRLHBOVUGVEA-UHFFFAOYSA-N 0.000 description 1
- 229910007948 ZrB2 Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910000905 alloy phase Inorganic materials 0.000 description 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- VWZIXVXBCBBRGP-UHFFFAOYSA-N boron;zirconium Chemical compound B#[Zr]#B VWZIXVXBCBBRGP-UHFFFAOYSA-N 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 229910001119 inconels 625 Inorganic materials 0.000 description 1
- 235000000396 iron Nutrition 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical class [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 235000011160 magnesium carbonates Nutrition 0.000 description 1
- 159000000003 magnesium salts Chemical class 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910001000 nickel titanium Inorganic materials 0.000 description 1
- 238000005121 nitriding Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010301 surface-oxidation reaction Methods 0.000 description 1
- 150000003623 transition metal compounds Chemical class 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/71—Ceramic products containing macroscopic reinforcing agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
- B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
- B23B27/148—Composition of the cutting inserts
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
- C04B35/111—Fine ceramics
- C04B35/117—Composites
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/12—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on oxides
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Structural Engineering (AREA)
- Composite Materials (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Metallurgy (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
- Ceramic Products (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Powder Metallurgy (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US59426775A | 1975-07-09 | 1975-07-09 | |
| US05/682,340 US4022584A (en) | 1976-05-11 | 1976-05-11 | Sintered cermets for tool and wear applications |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1070717A true CA1070717A (en) | 1980-01-29 |
Family
ID=27081914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA256,574A Expired CA1070717A (en) | 1975-07-09 | 1976-07-08 | Sintered cermets for tool and wear applications |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS5946907B2 (enrdf_load_stackoverflow) |
| AT (1) | AT364539B (enrdf_load_stackoverflow) |
| BR (1) | BR7604418A (enrdf_load_stackoverflow) |
| CA (1) | CA1070717A (enrdf_load_stackoverflow) |
| DE (1) | DE2630687A1 (enrdf_load_stackoverflow) |
| FR (1) | FR2317252A1 (enrdf_load_stackoverflow) |
| IT (1) | IT1062601B (enrdf_load_stackoverflow) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5823457B2 (ja) * | 1977-08-11 | 1983-05-16 | 三菱マテリアル株式会社 | 強靭サ−メット |
| GB1579999A (en) * | 1977-09-12 | 1980-11-26 | Gen Electric | Annular metal cutting die of titanium carbide coating tool steel and method of shaving metal rods |
| DE2741295C2 (de) * | 1977-09-14 | 1989-12-14 | Fried. Krupp Gmbh, 4300 Essen | Keramischer Formkörper |
| SE417818B (sv) | 1979-09-03 | 1981-04-13 | Sandvik Ab | Keramisk legering vesentligen omfattande aluminiumoxid samt nitrider och/eller karbonitrider av en eller flera metaller tillhorande grupperna iv b, v b och vi b i periodiska systemet samt en eller flera ... |
| JPS5820774A (ja) * | 1981-07-28 | 1983-02-07 | 東芝タンガロイ株式会社 | 耐熱焼結材料の製造方法 |
| CA1211474A (en) * | 1982-12-30 | 1986-09-16 | Corning Glass Works | Reaction sintered oxide-boride |
| JPS6011266A (ja) * | 1983-06-30 | 1985-01-21 | 日立金属株式会社 | 切削工具用セラミツクス |
| DE4024877C2 (de) * | 1990-08-06 | 1998-09-17 | Cerasiv Gmbh | Sinterformkörper, Verfahren zu seiner Herstellung und seine Verwendung |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1072182B (de) * | 1959-12-24 | VEB Hartmetallwerk Im'meib'orn, Imirmel'born (Thur.) | Verfahren zur Herstellung keramischer Verbundwerkstoffe | |
| DE504484C (de) * | 1926-02-13 | 1930-08-04 | Oskar Diener Dipl Ing | Verfahren zum Herstellen von Hartkoerpern fuer Werkzeuge, insbesondere Ziehsteine, aus Karbiden, Siliziden, Boriden, Aluminiumoxyd oder Gemischen von diesen |
| CH312093A (de) * | 1951-10-02 | 1955-12-31 | Eisen & Stahlind Ag | Warmverschleissfester und oxydationsbeständiger Sinterwerkstoff. |
| FR1133144A (fr) * | 1954-10-20 | 1957-03-21 | Plansee Metallwerk | Matériau résistant à l'oxydation et à la corrosion à haute température, et sonprocédé de fabrication |
| DE1041410B (de) * | 1955-06-15 | 1958-10-16 | Siemens Ag | Verfahren zur Herstellung von Koerpern aus Sinterhartstoffen |
| DE1041851B (de) * | 1956-08-04 | 1958-10-23 | Immelborn Hartmetallwerk | Verfahren zum Herstellen von Sinterkoerpern |
| DE1127093B (de) * | 1957-07-12 | 1962-04-05 | Plansee Metallwerk | Gesinterte Hartstofflegierung hoher Haerte, Verschleissfestigkeit und Korrosionsbestaendigkeit |
| DE1118078B (de) * | 1958-02-05 | 1961-11-23 | Degussa | Hartstoffkoerper und Verfahren zu seiner Herstellung |
| US3676086A (en) * | 1968-11-25 | 1972-07-11 | Du Pont | Metal/carbide-oxide composite |
| US3565643A (en) * | 1969-03-03 | 1971-02-23 | Du Pont | Alumina - metalline compositions bonded with aluminide and titanide intermetallics |
| US3843375A (en) * | 1972-04-06 | 1974-10-22 | Carborundum Co | Ceramic compositions and process of making same |
-
1976
- 1976-07-06 BR BR7604418A patent/BR7604418A/pt unknown
- 1976-07-07 IT IT5030576A patent/IT1062601B/it active
- 1976-07-08 DE DE19762630687 patent/DE2630687A1/de active Granted
- 1976-07-08 FR FR7620953A patent/FR2317252A1/fr active Granted
- 1976-07-08 CA CA256,574A patent/CA1070717A/en not_active Expired
- 1976-07-09 AT AT0505376A patent/AT364539B/de not_active IP Right Cessation
- 1976-07-09 JP JP51081105A patent/JPS5946907B2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| ATA505376A (de) | 1981-03-15 |
| JPS5946907B2 (ja) | 1984-11-15 |
| BR7604418A (pt) | 1978-01-31 |
| DE2630687A1 (de) | 1977-01-27 |
| IT1062601B (it) | 1984-10-20 |
| AT364539B (de) | 1981-10-27 |
| JPS5230812A (en) | 1977-03-08 |
| FR2317252B1 (enrdf_load_stackoverflow) | 1980-05-30 |
| DE2630687C2 (enrdf_load_stackoverflow) | 1988-01-21 |
| FR2317252A1 (fr) | 1977-02-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |