CA1190508A - Method for colouring oxide layers of aluminium or aluminium alloys with organic compounds - Google Patents
Method for colouring oxide layers of aluminium or aluminium alloys with organic compoundsInfo
- Publication number
- CA1190508A CA1190508A CA000384994A CA384994A CA1190508A CA 1190508 A CA1190508 A CA 1190508A CA 000384994 A CA000384994 A CA 000384994A CA 384994 A CA384994 A CA 384994A CA 1190508 A CA1190508 A CA 1190508A
- Authority
- CA
- Canada
- Prior art keywords
- oxide layer
- dye
- aluminium
- diazo
- diazo compound
- 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
- 239000004411 aluminium Substances 0.000 title claims abstract description 13
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 13
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 13
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 10
- 150000002894 organic compounds Chemical class 0.000 title claims abstract description 6
- 238000000034 method Methods 0.000 title claims description 37
- 238000004040 coloring Methods 0.000 title claims description 4
- 150000008049 diazo compounds Chemical class 0.000 claims abstract description 29
- 239000011148 porous material Substances 0.000 claims abstract description 13
- 239000007822 coupling agent Substances 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000000977 initiatory effect Effects 0.000 claims description 2
- 230000005670 electromagnetic radiation Effects 0.000 claims 2
- 230000004075 alteration Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 abstract description 2
- 230000001678 irradiating effect Effects 0.000 abstract description 2
- 239000000975 dye Substances 0.000 description 25
- 239000000243 solution Substances 0.000 description 19
- 230000008878 coupling Effects 0.000 description 14
- 238000010168 coupling process Methods 0.000 description 14
- 238000005859 coupling reaction Methods 0.000 description 14
- 238000007789 sealing Methods 0.000 description 12
- 125000000664 diazo group Chemical group [N-]=[N+]=[*] 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 9
- 238000011282 treatment Methods 0.000 description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000011888 foil Substances 0.000 description 6
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 5
- 239000000987 azo dye Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 5
- 239000012153 distilled water Substances 0.000 description 5
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 4
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 235000011114 ammonium hydroxide Nutrition 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 239000001117 sulphuric acid Substances 0.000 description 4
- 235000011149 sulphuric acid Nutrition 0.000 description 4
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 239000003086 colorant Substances 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000007639 printing Methods 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000001856 Ethyl cellulose Substances 0.000 description 2
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000004202 carbamide Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 229920001249 ethyl cellulose Polymers 0.000 description 2
- 235000019325 ethyl cellulose Nutrition 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000007650 screen-printing Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 description 2
- YFOOEYJGMMJJLS-UHFFFAOYSA-N 1,8-diaminonaphthalene Chemical compound C1=CC(N)=C2C(N)=CC=CC2=C1 YFOOEYJGMMJJLS-UHFFFAOYSA-N 0.000 description 1
- -1 2,5-diethoxybenzanilide zinc Chemical compound 0.000 description 1
- ZGNCICICEFKVNL-UHFFFAOYSA-K 3-methyl-4-pyrrolidin-1-ylbenzenediazonium;trichlorozinc(1-) Chemical compound [Cl-].[Cl-].[Cl-].[Zn+2].CC1=CC([N+]#N)=CC=C1N1CCCC1 ZGNCICICEFKVNL-UHFFFAOYSA-K 0.000 description 1
- UIKUBYKUYUSRSM-UHFFFAOYSA-N 3-morpholinopropylamine Chemical compound NCCCN1CCOCC1 UIKUBYKUYUSRSM-UHFFFAOYSA-N 0.000 description 1
- LRUJNDUWNJTRHJ-UHFFFAOYSA-N 4-(4-diazo-2,5-diethoxycyclohexa-1,5-dien-1-yl)morpholine Chemical compound C1=C(OCC)C(=[N+]=[N-])CC(OCC)=C1N1CCOCC1 LRUJNDUWNJTRHJ-UHFFFAOYSA-N 0.000 description 1
- LHYQAEFVHIZFLR-UHFFFAOYSA-L 4-(4-diazonio-3-methoxyphenyl)-2-methoxybenzenediazonium;dichloride Chemical class [Cl-].[Cl-].C1=C([N+]#N)C(OC)=CC(C=2C=C(OC)C([N+]#N)=CC=2)=C1 LHYQAEFVHIZFLR-UHFFFAOYSA-L 0.000 description 1
- UXJAGSSVZDVPFB-UHFFFAOYSA-N 4-[(dimethylamino)methyl]-2,5-dimethylphenol Chemical compound CN(C)CC1=CC(C)=C(O)C=C1C UXJAGSSVZDVPFB-UHFFFAOYSA-N 0.000 description 1
- YZYFPMLAGIGAJJ-UHFFFAOYSA-N 4-diazo-n,n-diethylcyclohexa-1,5-dien-1-amine Chemical compound CCN(CC)C1=CCC(=[N+]=[N-])C=C1 YZYFPMLAGIGAJJ-UHFFFAOYSA-N 0.000 description 1
- WFJIVOKAWHGMBH-UHFFFAOYSA-N 4-hexylbenzene-1,3-diol Chemical compound CCCCCCC1=CC=C(O)C=C1O WFJIVOKAWHGMBH-UHFFFAOYSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- 241001136792 Alle Species 0.000 description 1
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 1
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 description 1
- 229910010282 TiON Inorganic materials 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229940022663 acetate Drugs 0.000 description 1
- MQRWBMAEBQOWAF-UHFFFAOYSA-N acetic acid;nickel Chemical compound [Ni].CC(O)=O.CC(O)=O MQRWBMAEBQOWAF-UHFFFAOYSA-N 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 235000012538 ammonium bicarbonate Nutrition 0.000 description 1
- 239000001099 ammonium carbonate Substances 0.000 description 1
- 238000007743 anodising Methods 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 1
- 229940011182 cobalt acetate Drugs 0.000 description 1
- QAHREYKOYSIQPH-UHFFFAOYSA-L cobalt(II) acetate Chemical compound [Co+2].CC([O-])=O.CC([O-])=O QAHREYKOYSIQPH-UHFFFAOYSA-L 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 206010016256 fatigue Diseases 0.000 description 1
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229960003258 hexylresorcinol Drugs 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229940078494 nickel acetate Drugs 0.000 description 1
- 239000011664 nicotinic acid Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 150000003378 silver Chemical class 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 description 1
- CMXPERZAMAQXSF-UHFFFAOYSA-M sodium;1,4-bis(2-ethylhexoxy)-1,4-dioxobutane-2-sulfonate;1,8-dihydroxyanthracene-9,10-dione Chemical compound [Na+].O=C1C2=CC=CC(O)=C2C(=O)C2=C1C=CC=C2O.CCCCC(CC)COC(=O)CC(S([O-])(=O)=O)C(=O)OCC(CC)CCCC CMXPERZAMAQXSF-UHFFFAOYSA-M 0.000 description 1
- QPILZZVXGUNELN-UHFFFAOYSA-M sodium;4-amino-5-hydroxynaphthalene-2,7-disulfonate;hydron Chemical compound [Na+].OS(=O)(=O)C1=CC(O)=C2C(N)=CC(S([O-])(=O)=O)=CC2=C1 QPILZZVXGUNELN-UHFFFAOYSA-M 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- HODRFAVLXIFVTR-RKDXNWHRSA-N tevenel Chemical compound NS(=O)(=O)C1=CC=C([C@@H](O)[C@@H](CO)NC(=O)C(Cl)Cl)C=C1 HODRFAVLXIFVTR-RKDXNWHRSA-N 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- ZPWSKXDJLWXYSL-UHFFFAOYSA-L zinc;4-diazo-n,n-dimethylcyclohexa-1,5-dien-1-amine;dichloride Chemical compound [Cl-].[Cl-].[Zn+2].CN(C)C1=CCC(=[N+]=[N-])C=C1 ZPWSKXDJLWXYSL-UHFFFAOYSA-L 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/18—After-treatment, e.g. pore-sealing
- C25D11/24—Chemical after-treatment
- C25D11/243—Chemical after-treatment using organic dyestuffs
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C1/00—Photosensitive materials
- G03C1/76—Photosensitive materials characterised by the base or auxiliary layers
- G03C1/77—Photosensitive materials characterised by the base or auxiliary layers the base being of metal
Landscapes
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Engineering & Computer Science (AREA)
- Metallurgy (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Heat Sensitive Colour Forming Recording (AREA)
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
- Electrochemical Coating By Surface Reaction (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH672980A CH645409A5 (de) | 1980-09-08 | 1980-09-08 | Verfahren zum faerben von oxydschichten von aluminium oder aluminiumlegierungen mit organischen verbindungen. |
| CH6729/80-0 | 1980-09-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1190508A true CA1190508A (en) | 1985-07-16 |
Family
ID=4314132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000384994A Expired CA1190508A (en) | 1980-09-08 | 1981-09-01 | Method for colouring oxide layers of aluminium or aluminium alloys with organic compounds |
Country Status (11)
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3311882A1 (de) * | 1983-03-31 | 1985-02-07 | Carl Baasel Lasertechnik GmbH, 8000 München | Materialstueck aus aluminium, vorzugsweise aluminiumschild und verfahren zur herstellung desselben |
| DE3500079A1 (de) * | 1985-01-03 | 1986-07-10 | Henkel KGaA, 4000 Düsseldorf | Mittel und verfahren zur erzeugung farbloser verdichtungsschichten auf anodisierten aluminiumoberflaechen |
| DE19902469C2 (de) * | 1999-01-22 | 2001-03-15 | Erbsloeh Ag | Verfahren zur Erzeugung von Farbkontrasten an Aluminium-Material mit anodisch oxidierten Oberflächen |
| RU2147524C1 (ru) * | 1999-06-29 | 2000-04-20 | Князев Евгений Владимирович | Способ изготовления изделий |
| RU2166434C1 (ru) * | 2000-06-21 | 2001-05-10 | Князев Евгений Владимирович | Способ изготовления изделий |
| RU2243904C2 (ru) * | 2002-11-10 | 2005-01-10 | Алферов Владимир Александрович | Устройство для обработки изделий |
| US6884336B2 (en) * | 2003-01-06 | 2005-04-26 | General Motors Corporation | Color finishing method |
| CN100381614C (zh) * | 2004-07-14 | 2008-04-16 | 上海应用技术学院 | 一种铝阳极氧化膜的着色方法 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB487605A (en) * | 1936-12-22 | 1938-06-22 | Frederick Hill | Process of colouring artificially-produced oxide films on aluminium and its alloys |
| GB525734A (en) * | 1939-02-27 | 1940-09-03 | British Anodising Ltd | Improvements in the colouring of artifically produced oxide films on light metals |
| FR1007838A (fr) * | 1948-04-06 | 1952-05-12 | Matieres Colorantes Et Pro Que | Procédé pour la production d'images positives ou négatives sur l'aluminium et ses alliages, par formation de colorants azoïques |
| US2871119A (en) * | 1955-02-21 | 1959-01-27 | Dietzgen Co Eugene | Diazotype reproduction material and method |
| JPS499977B1 (enrdf_load_stackoverflow) * | 1969-08-29 | 1974-03-07 | ||
| JPS498098B1 (enrdf_load_stackoverflow) * | 1969-09-01 | 1974-02-23 | ||
| JPS5479032A (en) * | 1977-12-06 | 1979-06-23 | Fuji Photo Film Co Ltd | Image formation emthod |
| DE2811396A1 (de) * | 1978-03-16 | 1979-09-27 | Hoechst Ag | Verfahren zur anodischen oxidation von aluminium und dessen verwendung als druckplatten-traegermaterial |
| DE2836803A1 (de) * | 1978-08-23 | 1980-03-06 | Hoechst Ag | Verfahren zur anodischen oxidation von aluminium und dessen verwendung als druckplatten-traegermaterial |
-
1980
- 1980-09-08 CH CH672980A patent/CH645409A5/de not_active IP Right Cessation
-
1981
- 1981-08-04 AT AT0341881A patent/AT376462B/de not_active IP Right Cessation
- 1981-08-21 NL NL8103906A patent/NL8103906A/nl not_active Application Discontinuation
- 1981-08-26 FR FR8116286A patent/FR2489849B1/fr not_active Expired
- 1981-08-26 DE DE19813133691 patent/DE3133691A1/de not_active Ceased
- 1981-08-28 ZA ZA815990A patent/ZA815990B/xx unknown
- 1981-08-31 BE BE0/205822A patent/BE890156A/fr not_active IP Right Cessation
- 1981-09-01 CA CA000384994A patent/CA1190508A/en not_active Expired
- 1981-09-04 DD DD81233066A patent/DD201688A5/de unknown
- 1981-09-07 JP JP56140833A patent/JPS57114698A/ja active Granted
- 1981-09-07 GB GB8127053A patent/GB2082975B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB2082975A (en) | 1982-03-17 |
| DE3133691A1 (de) | 1982-06-16 |
| GB2082975B (en) | 1984-08-08 |
| FR2489849B1 (fr) | 1985-06-21 |
| DD201688A5 (de) | 1983-08-03 |
| JPH0128119B2 (enrdf_load_stackoverflow) | 1989-06-01 |
| AT376462B (de) | 1984-11-26 |
| JPS57114698A (en) | 1982-07-16 |
| CH645409A5 (de) | 1984-09-28 |
| BE890156A (fr) | 1981-12-16 |
| NL8103906A (nl) | 1982-04-01 |
| ATA341881A (de) | 1984-04-15 |
| ZA815990B (en) | 1982-08-25 |
| FR2489849A1 (fr) | 1982-03-12 |
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| US3793026A (en) | Photochemical reproduction process |
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