DK141962B - Alkaline resistant glass compositions. - Google Patents
Alkaline resistant glass compositions. Download PDFInfo
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- DK141962B DK141962B DK689573AA DK689573A DK141962B DK 141962 B DK141962 B DK 141962B DK 689573A A DK689573A A DK 689573AA DK 689573 A DK689573 A DK 689573A DK 141962 B DK141962 B DK 141962B
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C13/00—Fibre or filament compositions
- C03C13/001—Alkali-resistant fibres
- C03C13/002—Alkali-resistant fibres containing zirconium
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/078—Glass compositions containing silica with 40% to 90% silica, by weight containing an oxide of a divalent metal, e.g. an oxide of zinc
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/083—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
- C03C3/085—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Compositions (AREA)
Description
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(11) FREMLÆGGELSESSKRIFT 1^1962 C 03 C 3/30 DANMARK ,6,) lntcl·3 I ” cc §(21) Ansøgning nr. 6895/75 (22) Indleveret den 18. dec. 1972 (23) Løbedag 18. deC. 1972 (44) Ansøgningen fremlagt og fremlæggelsesskriftet offentliggjort den 28« Jul. 1 980 DIREKTORATET FOR t . .(11) PUBLICATION REPORT 1 ^ 1962 C 03 C 3/30 DENMARK, 6,) lntcl · 3 I ”cc § (21) Application No. 6895/75 (22) Filed on 18 Dec. 1972 (23) Race day 18. deC. 1972 (44) The application presented and the petition published on 28 Jul. 1 980 DIRECTORATE FOR t. .
PATENT-OG VAREMÆRKEVÆSENET (30) Prioritet begæret fra denPATENT AND TRADE MARKET (30) Priority requested from it
19. dec. 1972, 58613/72, GBDec 19 1972, 58613/72, GB
(?1> PILKINGTON BROTHERS LIMITED, Prescot Road, St. Helens, Lancashire, TIB.(? 1> PILKINGTON BROTHERS LIMITED, Prescot Road, St. Helens, Lancashire, TIB.
(72) Opfinder; Brian Yale, 18 Claremont Drive, Ormskirk, Lancashire, GB:(72) Inventor; Brian Yale, 18 Claremont Drive, Ormskirk, Lancashire, GB:
Anup Sircar, 23 Winchester Road, Fulwood, Sheffield, Yorkshire, GB.Anup Sircar, 23 Winchester Road, Fulwood, Sheffield, Yorkshire, GB.
(74) Fuldmægtig under sagens behandling:(74) Plenipotentiary in the proceedings:
Ingeniørfirmaet Lehmann & Ree.The engineering firm Lehmann & Ree.
(54) Alkaliresistente glas sammensætninger.(54) Alkaline resistant glass compositions.
Opfindelsen angår Si02-baserede alkaliresistente glassammensætninger og angår specielt men ikke udelukkende sådanne sammensætninger, som kan tildannes til glasfibre. Det er velkendt at inkorporere en zirconiumoxidmængde (Zr02) i glassammensætninger for at forbedre deres modstandsdygtighed mod alkaliske midler. Det er også velkendt, at inkorporeringen af væsentlige mængder boroxid (B20j) og/ eller alkalimetaloxider (R20) har en ødelæggende virkning på glassets alkaliresistens, idet dog begge disse bestanddele har andre gunstige egenskaber, som har bevirket, at man har anset deres inkorporering for ønskelig. F.eks. virker såvel B2Qj som R20 som flusmidler, som letter smeltning og dermed medvirker til at overvinde Zr02’s tendens til at gøre smeltning vanskelig, og disse stoffer kan også forbedre glassets egenskaber med hensyn til trækning af glasfibre.The invention relates to SiO2-based alkali resistant glass compositions and relates specifically but not exclusively to such compositions which can be formed into glass fibers. It is well known to incorporate a quantity of zirconia (ZrO 2) into glass compositions to improve their resistance to alkaline agents. It is also well known that the incorporation of substantial amounts of boron oxide (B 2 O 2) and / or alkali metal oxides (R 2 O) has a devastating effect on the alkali resistance of the glass, although both of these components have other beneficial properties which have caused their incorporation to be considered as desirable. Eg. Both B2Qj and R20 act as fluxes, which facilitate melting and thus help to overcome Zr02's tendency to make melting difficult, and these substances can also improve the properties of glass with regard to the drawing of glass fibers.
2 1419622 141962
Beskrivelsen til engelsk patent nr. 1.2*13.972 indeholder en generaliseret omtale af alkaliresistente glasser til brug ved fremstilling af glasfibre til anvendelse som armering i cementprodukter, hvilke glasser indeholder 65-80¾ Si02, 10-20¾ Zr02 og 10-20¾ af et netværksmodificeringsmiddel, som er et alkalimetal eller et jordalkalimetal eller ZnO. Det angives, at glasset fortrinsvis indeholder 15-16¾ Zr02 og 10-12¾ Na20. Det angives yderligere, at netværksmodificeringsmidlet også kan virke som flusmiddel, f.eks. kan Li20 virke på begge måder, men at flusmidler, som ikke også er netværksmodificeringsmidler normalt vil være til stede i et indhold på maksimalt 10¾. Det særlige glas, som er eksemplificeret, indeholder 16¾ Zr02, 11¾ Na20, 1¾ Li20, 1¾ A120^ og 71¾ Si02. Der er ikke givet noget eksempel på et glas indeholdende et jordalkalimetaloxid eller ZnO, og der er ingen antydning af, at man bør holde indholdet af alkalimetaloxider og af andre flusmidler, som også er netværksmodificeringsmidler, på et minimum.The disclosure of English Patent No. 1.2 * 13.972 contains a generalized mention of alkali resistant glasses for use in the manufacture of glass fibers for use as reinforcement in cement products, which glasses contain 65-80¾ Si02, 10-20¾ Zr02 and 10-20¾ of a network modifier which is an alkali metal or an alkaline earth metal or ZnO. It is stated that the glass preferably contains 15-16¾ ZrO₂ and 10-12¾ Na₂O. It is further stated that the network modifier may also act as a flux, e.g. Li20 may work in both ways, but fluxes that are not also network modifiers will normally be present in a maximum content of 10¾. The particular glass exemplified contains 16¾ ZrO₂, 11¾ Na₂O, 1¾ Li₂O, 1¾ Al₂O₂, and 71¾ SiO₂. No example of a glass containing an alkaline earth metal oxide or ZnO is given and there is no suggestion that the content of alkali metal oxides and of other fluxes which are also network modifiers should be kept to a minimum.
Et formål med den foreliggende opfindelse er at tilvejebringe glassammensætninger med en særlig høj alkaliresistens ved at reducere eller eliminere de bestanddele, som har tendens til at forringe alkaliresistensen.It is an object of the present invention to provide glass compositions with a particularly high alkali resistance by reducing or eliminating those components which tend to impair the alkali resistance.
Ifølge den foreliggende opfindelse er en alkaliresistent Si02-baseret glassammensætning indeholdende en Zr02~mængde for at øge dens alkaliresistens ejendommelig ved, at den omfatter, udtrykt i vægtprocent:According to the present invention, an alkali-resistant SiO2-based glass composition containing a ZrO2 amount to increase its alkali resistance is peculiar by comprising:
SiOg 45-65 procentSiOg 45-65 percent
ZrOg 6-20 procent RO 20-45 procent . hvor den totale mængde Si02 + Zr02 + RO udgør ikke mindre end 94 vægt procent af glasset, hvor RO betegner mindst ét divalent oxid af gruppen bestående af CaO, MgO, SrO, BaO og ZnO, hvorhos mængden af det eller de divalente oxider ligger indenfor områderne: CaO 20-45 vægtprocent; MgO 0-10 vægtprocent, SrO 0-8 vægtprocent, BaO 0-10 vægtprocent og ZnO 0-5 vægtprocent.About 6-20 percent RO 20-45 percent. wherein the total amount of SiO2 + ZrO2 + RO represents not less than 94% by weight of the glass, wherein RO represents at least one divalent oxide of the group consisting of CaO, MgO, SrO, BaO and ZnO, wherein the amount of the divalent oxide (s) is within the areas: CaO 20-45% by weight; MgO 0-10 wt%, SrO 0-8 wt%, BaO 0-10 wt% and ZnO 0-5 wt%.
Sammensætningen kan også indeholde en eller flere af følgende yderligere bestanddele: Ti02, A120^, BgO^, Fe20^, F2 og R,-,0, hvor R20 betegner K20, Na20 eller Li20, hvorhos mængden af en hvilken som helst af de yderligere bestanddele ikke overstiger 5% af sammensætningens vægt.The composition may also contain one or more of the following additional constituents: TiO 2, Al 2 O 2, B 2 O 2, Fe 2 O 2, F 2 and R 1 - 0, wherein R 20 represents K 2 O, Na 2 O or Li 2 Ingredients do not exceed 5% by weight of the composition.
Glasset består således stort set af Si02, en forholdsvis stor andel af Zr02, som giver det alkaliresistens, og en eller flere 3 141962 af RO-oxiderne, som ikke forringer alkaliresistensen, eller som endog kan forøge den. Ikke over 6% af den samlede vægt kan bestå af andre bestanddele, såsom flusmidler, når disse bestanddele ikke bidrager til eller endog kunne forringe alkaliresistensen. Mængden af R20 overstiger fortrinsvis ikke J>% af sammensætningens vægt. På trods af fraværet af eller det lave niveau af flusmidler har det vist sig ret let at smelte glassammensætningerne.The glass thus consists largely of SiO2, a relatively large proportion of ZrO2, which gives it alkali resistance, and one or more of the RO oxides which do not impair or even increase the alkali resistance. Not more than 6% of the total weight may consist of other constituents, such as fluxes, when these constituents do not contribute to or even impair the alkali resistance. Preferably, the amount of R20 does not exceed J>% by weight of the composition. Despite the absence or low level of fluxes, it has proved quite easy to melt the glass compositions.
Når disse glassammensætninger har været underkastet standardprøver med hensyn til kemisk bestandighed i vandige og i alkaliske omgivelser, har de givet særdeles gode resultater. Det har også vist sig muligt at tildanne dem til glasuldfibre, f.eks. ved højtemperaturprocesser af blæsetypen.When these glass compositions have been subjected to standard chemical resistance tests in aqueous and alkaline environments, they have produced very good results. It has also been found possible to form them into glass wool fibers, e.g. for high-temperature blow-type processes.
Særlige udførelsesformer for glaskompositionerne ifølge opfindelsen vil nu blive beskrevet ved hjælp af et eksempel.Particular embodiments of the glass compositions of the invention will now be described by way of example.
Nedenstående tabel 1 indeholder 18 glaskompositioner bestående af ZrOg, SiOg og CaO og illustrerer anvendelse af fire forskellige værdier af Zr02 (18, 14, 10 og 8 vægtprocent) sammen med forskellige mængder Si02 mellem 45 og 65 vægtprocent og tilsvarende omvendt varierende mængder CaO mellem 45 og 21 vægtprocent* 4 141962 TABEL 1 vgt.pro- vgt .pro- vgt.pro-cent cent centThe following Table 1 contains 18 glass compositions consisting of ZrOg, SiOg and CaO and illustrates the use of four different values of ZrO2 (18, 14, 10 and 8% by weight) together with different amounts of SiO and 21% by weight * 4 141962 TABLE 1% by weight.
Zr02 Si02 CaOZrO2 SiO2 CaO
18 45 37 18 50 32 18 55 27 18 60 22 14 45 4l 14 50 36 14 55 31 14 60 26 14 65 21 10 45 45 10 50 4o 10 55 35 10 60 30 10 65 25 8 48 44 8 50 42 8 55 37 8_60_32:_18 45 37 18 50 32 18 55 27 18 60 22 14 45 4l 14 50 36 14 55 31 14 60 26 14 65 21 10 45 45 10 50 4o 10 55 35 10 60 30 10 65 25 8 48 44 8 50 42 8 55 37 8_60_32: _
Tabel 2 indeholder yderligere 28 glaskompositioner, som hver betegnes med et tal C/07 efterfulgt af et tre-cifret tal. Por de fleste af glastyperne i tabel 2 er kompositionen givet såvel i molprocent som i vægtprocent, og liquidustemperaturen og resultaterne af standardforsøg over kemisk bestandighed er opført. I sidstnævnte forsøg er 10 g prøver af glasset findelt til et pulver og behandlet med 50 cm^ af det anførte reagens (vand, N/10 NaOH henholdsvis N NaOH). Vægten af de forskellige ekstraherede oxidkomponenter (i milligram) er opført i tabel 2.Table 2 contains an additional 28 glass compositions, each denoted by a number C / 07 followed by a three-digit number. For most of the glass types in Table 2, the composition is given both in mole percent and by weight percent, and the liquidus temperature and the results of standard chemical resistance tests are listed. In the latter experiment, 10 g samples of the glass are comminuted to a powder and treated with 50 cm 2 of the reagent indicated (water, N / 10 NaOH and N NaOH, respectively). The weights of the various extracted oxide components (in milligrams) are listed in Table 2.
5 1419625 141962
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Liquidustemperaturen af glastyperne C/07/208 til 216 inklusive blev ikke målt nøjagtigt, men det blev skønnet, at de alle faldt i området fra 1400 til 15G0°C. Den kemiske bestandighed af glastyper C/07/211 og 213 blev ikke målt, da disse glastyper har stor lighed med glastypen 212, idet de kun afviger i ZrC>2-indholdet og den deraf følgende ændring af SiOg-indholdet, og de kan følgelig med sikkerhed forudsiges at have ensartet kemisk bestandighed, hvor 211 er en smule dårligere på grund af det lavere Zr02-indhold, og 213 er en smule bedre på grund af det højere Zr02~indhold.The liquidus temperature of the glass types C / 07/208 to 216 inclusive was not accurately measured, but it was estimated that they all fell in the range from 1400 to 15G0 ° C. The chemical resistance of glass types C / 07/211 and 213 was not measured as these glass types bear a great similarity to glass type 212, differing only in the ZrC> 2 content and the consequent change in SiOg content, and they can consequently is confidently predicted to have uniform chemical resistance, with 211 being slightly inferior due to the lower Zr02 content and 213 being slightly better due to the higher Zr02 content.
Især når den maksimalt tilladelige Si02-mængde (65 vægtprocent) anvendes, er det gavnligt med et Na2O-indhold på op til 5 vægtprocent som i glastyperne C/07/208 og 209 for at forbedre glassets trækningsegenskaber og derved lette fiberdannelsen. Disse glastyper kan ligeledes indeholde den minimalt tilladelige mængde CaO (20 vægtprocent). Sædvanligvis forøges CaO-mængden, når Si02-mængden nedsæt tes. Op til 10$ af CaO-mængden kan erstattes af BaO og/eller MgO, og op til 8$ af CaO kan erstattes af SrO, og op til 5$ af CaO kan erstattes af ZnO, hvis dette ønskes. Med MgO eller SrO til stede kan en mindre sænkning af liquidustemperaturen opnås, hvilket er gunstigt ved dannelse af glasfibre. En lille mængde Ti02 kan ligeledes optages som i glastypen C/07/179 for at give en lignende sænkning af liquidustemperaturen, men Ti02 har ligeledes tendens til at nedsætte alkali-resistensen, således at dette stof kun kan anvendes i begrænset omfang, det vil sige op til 5 vægtprocent.Particularly when the maximum permissible SiO 2 content (65% by weight) is used, it is beneficial to have a Na2O content of up to 5% by weight as in glass types C / 07/208 and 209 to improve the tensile properties of the glass and thereby facilitate fiber formation. These types of glass may also contain the minimum allowable amount of CaO (20% by weight). Usually the amount of CaO is increased when the SiO2 amount is decreased. Up to $ 10 of the CaO amount can be replaced by BaO and / or MgO, and up to $ 8 of CaO can be replaced by SrO, and up to $ 5 of CaO can be replaced by ZnO if desired. With MgO or SrO present, a slight lowering of the liquidus temperature can be achieved, which is favorable for the formation of glass fibers. A small amount of TiO 2 can also be incorporated as in glass type C / 07/179 to give a similar lowering of the liquidus temperature, but TiO up to 5% by weight.
B-jOj eller ?2 kunne ligeledes optages i mængder på op til 5 vægtprocent for at lette smeltning. Fe20^ kan som urenhed hidrørende fra de benyttede råmaterialers sædvanlige indhold af urenheder være til stede i de sædvanlige små mængder (op til 0.5 vægtprocent).B-jOj or? 2 could also be absorbed in amounts of up to 5% by weight to facilitate melting. Fe2 O2 may be present in the usual small amounts (up to 0.5% by weight) as impurities resulting from the usual impurities content of the raw materials used.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5861372 | 1972-12-19 | ||
| GB5861372A GB1399556A (en) | 1972-12-19 | 1972-12-19 | Alkali-resistant glass compositions |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DK141962B true DK141962B (en) | 1980-07-28 |
| DK141962C DK141962C (en) | 1980-12-22 |
Family
ID=10482000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK689573AA DK141962B (en) | 1972-12-19 | 1973-12-18 | Alkaline resistant glass compositions. |
Country Status (20)
| Country | Link |
|---|---|
| JP (1) | JPS578777B2 (en) |
| AR (1) | AR202202A1 (en) |
| BE (1) | BE808744A (en) |
| BR (1) | BR7309899D0 (en) |
| CA (1) | CA985710A (en) |
| CS (1) | CS174225B2 (en) |
| DD (1) | DD108726A5 (en) |
| DE (1) | DE2361195A1 (en) |
| DK (1) | DK141962B (en) |
| FI (1) | FI55327C (en) |
| FR (1) | FR2210579B1 (en) |
| GB (1) | GB1399556A (en) |
| IE (1) | IE38605B1 (en) |
| IT (1) | IT1009072B (en) |
| LU (1) | LU69010A1 (en) |
| NL (1) | NL7317097A (en) |
| NO (1) | NO134047C (en) |
| PL (1) | PL89597B1 (en) |
| SE (1) | SE392458B (en) |
| ZA (1) | ZA739340B (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5828210B2 (en) * | 1974-11-07 | 1983-06-14 | オノダセメント カブシキガイシヤ | Kobutsu Sen Imataha Beads Seibutsu |
| JPS524520A (en) * | 1975-06-30 | 1977-01-13 | Fuji Fibre Glass Co Ltd | Composite of alkaliiproof glass |
| JPS5464507A (en) * | 1977-11-02 | 1979-05-24 | Obara Optical Glass | Method of making superlight ceramic porous body |
| US5332699A (en) * | 1986-02-20 | 1994-07-26 | Manville Corp | Inorganic fiber composition |
| US4830989A (en) * | 1986-05-28 | 1989-05-16 | Pfizer Inc. | Alkali-resistant glass fiber |
| US5994247A (en) | 1992-01-17 | 1999-11-30 | The Morgan Crucible Company Plc | Saline soluble inorganic fibres |
| JPH06126010A (en) * | 1992-10-20 | 1994-05-10 | Chifuku:Kk | Putter training device |
| CN100360472C (en) * | 1993-01-15 | 2008-01-09 | 摩根坩埚有限公司 | Method of providing refratory properties to article |
| US5811360A (en) * | 1993-01-15 | 1998-09-22 | The Morgan Crucible Company Plc | Saline soluble inorganic fibres |
| JP3126385B2 (en) † | 1993-01-15 | 2001-01-22 | ザ・モーガン・クルーシブル・カンパニー・ピーエルシー | Inorganic fiber dissolved in physiological saline |
| DE4419388C2 (en) * | 1994-05-30 | 1996-10-02 | Witega Angewandte Werkstoff Forschung Gemeinnuetzige Gmbh Adlershof | Recycling of waste materials in the form of screen glass from picture tubes from television sets and from computer monitors |
| GB9414154D0 (en) * | 1994-07-13 | 1994-08-31 | Morgan Crucible Co | Saline soluble inorganic fibres |
| US5928975A (en) * | 1995-09-21 | 1999-07-27 | The Morgan Crucible Company,Plc | Saline soluble inorganic fibers |
| CN100497241C (en) | 2001-10-09 | 2009-06-10 | 3M创新有限公司 | Compositions containing biosoluble inorganic fibers and micaceous binders |
| GB2383793B (en) | 2002-01-04 | 2003-11-19 | Morgan Crucible Co | Saline soluble inorganic fibres |
| US7875566B2 (en) | 2004-11-01 | 2011-01-25 | The Morgan Crucible Company Plc | Modification of alkaline earth silicate fibres |
-
1972
- 1972-12-19 GB GB5861372A patent/GB1399556A/en not_active Expired
-
1973
- 1973-12-04 IE IE2187/73A patent/IE38605B1/en unknown
- 1973-12-05 DE DE2361195A patent/DE2361195A1/en not_active Withdrawn
- 1973-12-07 ZA ZA739340A patent/ZA739340B/en unknown
- 1973-12-07 CA CA187,642A patent/CA985710A/en not_active Expired
- 1973-12-13 NL NL7317097A patent/NL7317097A/xx not_active Application Discontinuation
- 1973-12-14 LU LU69010A patent/LU69010A1/xx unknown
- 1973-12-14 CS CS8690A patent/CS174225B2/cs unknown
- 1973-12-17 FR FR7344975A patent/FR2210579B1/fr not_active Expired
- 1973-12-17 BE BE138966A patent/BE808744A/en unknown
- 1973-12-17 SE SE7317020A patent/SE392458B/en unknown
- 1973-12-17 FI FI3866/73A patent/FI55327C/en active
- 1973-12-17 DD DD175393A patent/DD108726A5/xx unknown
- 1973-12-18 NO NO4830/73A patent/NO134047C/no unknown
- 1973-12-18 JP JP14045773A patent/JPS578777B2/ja not_active Expired
- 1973-12-18 IT IT70742/73A patent/IT1009072B/en active
- 1973-12-18 BR BR9899/73A patent/BR7309899D0/en unknown
- 1973-12-18 DK DK689573AA patent/DK141962B/en not_active IP Right Cessation
- 1973-12-18 AR AR251588A patent/AR202202A1/en active
- 1973-12-18 PL PL1973167412A patent/PL89597B1/pl unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CS174225B2 (en) | 1977-03-31 |
| DE2361195A1 (en) | 1974-07-11 |
| IT1009072B (en) | 1976-12-10 |
| ZA739340B (en) | 1974-10-30 |
| BE808744A (en) | 1974-06-17 |
| AR202202A1 (en) | 1975-05-23 |
| FI55327B (en) | 1979-03-30 |
| FR2210579B1 (en) | 1980-01-18 |
| IE38605L (en) | 1974-06-19 |
| NO134047C (en) | 1976-08-11 |
| JPS578777B2 (en) | 1982-02-18 |
| IE38605B1 (en) | 1978-04-26 |
| LU69010A1 (en) | 1974-02-22 |
| JPS4999311A (en) | 1974-09-19 |
| FI55327C (en) | 1979-07-10 |
| PL89597B1 (en) | 1976-11-30 |
| BR7309899D0 (en) | 1975-09-02 |
| DD108726A5 (en) | 1974-10-05 |
| AU6357273A (en) | 1975-06-19 |
| FR2210579A1 (en) | 1974-07-12 |
| NO134047B (en) | 1976-05-03 |
| SE392458B (en) | 1977-03-28 |
| CA985710A (en) | 1976-03-16 |
| NL7317097A (en) | 1974-06-21 |
| GB1399556A (en) | 1975-07-02 |
| DK141962C (en) | 1980-12-22 |
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Legal Events
| Date | Code | Title | Description |
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| PBP | Patent lapsed |