GB759409A - Improvements in photographic emulsions containing colour couplers - Google Patents
Improvements in photographic emulsions containing colour couplersInfo
- Publication number
- GB759409A GB759409A GB11365/54A GB1136554A GB759409A GB 759409 A GB759409 A GB 759409A GB 11365/54 A GB11365/54 A GB 11365/54A GB 1136554 A GB1136554 A GB 1136554A GB 759409 A GB759409 A GB 759409A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tert
- amylphenoxy
- acid
- benzamido
- chloride
- 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
- 239000000839 emulsion Substances 0.000 title abstract 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 abstract 20
- -1 aliphatic alcohols Chemical class 0.000 abstract 14
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 abstract 10
- 125000000043 benzamido group Chemical group [H]N([*])C(=O)C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 abstract 10
- 229960000583 acetic acid Drugs 0.000 abstract 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 6
- 150000001412 amines Chemical class 0.000 abstract 5
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 abstract 4
- 239000000203 mixture Substances 0.000 abstract 4
- FYSNRJHAOHDILO-UHFFFAOYSA-N thionyl chloride Chemical compound ClS(Cl)=O FYSNRJHAOHDILO-UHFFFAOYSA-N 0.000 abstract 4
- 125000000094 2-phenylethyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])C([H])([H])* 0.000 abstract 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 abstract 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 abstract 3
- 239000002253 acid Substances 0.000 abstract 3
- 229940040526 anhydrous sodium acetate Drugs 0.000 abstract 3
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 abstract 3
- 229920001577 copolymer Polymers 0.000 abstract 3
- 238000010438 heat treatment Methods 0.000 abstract 3
- 229910052742 iron Inorganic materials 0.000 abstract 3
- FQPSGWSUVKBHSU-UHFFFAOYSA-N methacrylamide Chemical compound CC(=C)C(N)=O FQPSGWSUVKBHSU-UHFFFAOYSA-N 0.000 abstract 3
- NGNBDVOYPDDBFK-UHFFFAOYSA-N 2-[2,4-di(pentan-2-yl)phenoxy]acetyl chloride Chemical compound CCCC(C)C1=CC=C(OCC(Cl)=O)C(C(C)CCC)=C1 NGNBDVOYPDDBFK-UHFFFAOYSA-N 0.000 abstract 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 abstract 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 abstract 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract 2
- 239000007868 Raney catalyst Substances 0.000 abstract 2
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 abstract 2
- 229910000564 Raney nickel Inorganic materials 0.000 abstract 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 abstract 2
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 abstract 2
- 229910052739 hydrogen Inorganic materials 0.000 abstract 2
- 239000001257 hydrogen Substances 0.000 abstract 2
- 125000005397 methacrylic acid ester group Chemical group 0.000 abstract 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 abstract 2
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 abstract 1
- VTPNYMSKBPZSTF-UHFFFAOYSA-N 1-ethenyl-2-ethylbenzene Chemical compound CCC1=CC=CC=C1C=C VTPNYMSKBPZSTF-UHFFFAOYSA-N 0.000 abstract 1
- NVZWEEGUWXZOKI-UHFFFAOYSA-N 1-ethenyl-2-methylbenzene Chemical compound CC1=CC=CC=C1C=C NVZWEEGUWXZOKI-UHFFFAOYSA-N 0.000 abstract 1
- JPSKCQCQZUGWNM-UHFFFAOYSA-N 2,7-Oxepanedione Chemical compound O=C1CCCCC(=O)O1 JPSKCQCQZUGWNM-UHFFFAOYSA-N 0.000 abstract 1
- VTULJCFJIIAAIS-UHFFFAOYSA-N 2-(2-sulfobenzoyl)oxycarbonylbenzenesulfonic acid Chemical compound OS(=O)(=O)C1=CC=CC=C1C(=O)OC(=O)C1=CC=CC=C1S(O)(=O)=O VTULJCFJIIAAIS-UHFFFAOYSA-N 0.000 abstract 1
- CSEWAUGPAQPMDC-UHFFFAOYSA-N 2-(4-aminophenyl)acetic acid Chemical compound NC1=CC=C(CC(O)=O)C=C1 CSEWAUGPAQPMDC-UHFFFAOYSA-N 0.000 abstract 1
- IOXOZOPLBFXYLM-UHFFFAOYSA-N 2-(4-nitrophenyl)ethanamine Chemical compound NCCC1=CC=C([N+]([O-])=O)C=C1 IOXOZOPLBFXYLM-UHFFFAOYSA-N 0.000 abstract 1
- GOJUJUVQIVIZAV-UHFFFAOYSA-N 2-amino-4,6-dichloropyrimidine-5-carbaldehyde Chemical group NC1=NC(Cl)=C(C=O)C(Cl)=N1 GOJUJUVQIVIZAV-UHFFFAOYSA-N 0.000 abstract 1
- CGGYSTYVGGSXEO-UHFFFAOYSA-N 2-carbonochloridoyl-6-chlorobenzenesulfonic acid Chemical compound OS(=O)(=O)C1=C(Cl)C=CC=C1C(Cl)=O CGGYSTYVGGSXEO-UHFFFAOYSA-N 0.000 abstract 1
- JRMAQQQTXDJDNC-UHFFFAOYSA-M 2-ethoxy-2-oxoacetate Chemical compound CCOC(=O)C([O-])=O JRMAQQQTXDJDNC-UHFFFAOYSA-M 0.000 abstract 1
- CXYMDAXGGAITQP-UHFFFAOYSA-N 2-hydroxy-n-phenylnaphthalene-1-carboxamide Chemical compound OC1=CC=C2C=CC=CC2=C1C(=O)NC1=CC=CC=C1 CXYMDAXGGAITQP-UHFFFAOYSA-N 0.000 abstract 1
- MEEKGULDSDXFCN-UHFFFAOYSA-N 2-pentylphenol Chemical compound CCCCCC1=CC=CC=C1O MEEKGULDSDXFCN-UHFFFAOYSA-N 0.000 abstract 1
- QUEKGYQTRJVEQC-UHFFFAOYSA-N 2516-96-3 Chemical compound OC(=O)C1=CC([N+]([O-])=O)=CC=C1Cl QUEKGYQTRJVEQC-UHFFFAOYSA-N 0.000 abstract 1
- NNGHWPIQPQHOKQ-UHFFFAOYSA-N 3-nitro-n-(5-oxo-1-phenyl-4h-pyrazol-3-yl)benzamide Chemical compound [O-][N+](=O)C1=CC=CC(C(=O)NC=2CC(=O)N(N=2)C=2C=CC=CC=2)=C1 NNGHWPIQPQHOKQ-UHFFFAOYSA-N 0.000 abstract 1
- NXTNASSYJUXJDV-UHFFFAOYSA-N 3-nitrobenzoyl chloride Chemical compound [O-][N+](=O)C1=CC=CC(C(Cl)=O)=C1 NXTNASSYJUXJDV-UHFFFAOYSA-N 0.000 abstract 1
- LAKMXGZYUWSTOT-UHFFFAOYSA-N 4-chloro-1-hydroxy-N-[2-(4-nitrophenyl)ethyl]naphthalene-2-carboxamide Chemical compound OC1=C(C=C(C2=CC=CC=C12)Cl)C(=O)NCCC1=CC=C(C=C1)[N+](=O)[O-] LAKMXGZYUWSTOT-UHFFFAOYSA-N 0.000 abstract 1
- PVKNQGWSRAGMNM-UHFFFAOYSA-N 5-amino-2-phenyl-1h-pyrazol-3-one Chemical compound N1C(N)=CC(=O)N1C1=CC=CC=C1 PVKNQGWSRAGMNM-UHFFFAOYSA-N 0.000 abstract 1
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical group NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 abstract 1
- 239000005711 Benzoic acid Substances 0.000 abstract 1
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 abstract 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 abstract 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 abstract 1
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 abstract 1
- 239000004141 Sodium laurylsulphate Substances 0.000 abstract 1
- 150000003926 acrylamides Chemical class 0.000 abstract 1
- 125000000217 alkyl group Chemical group 0.000 abstract 1
- 125000003277 amino group Chemical group 0.000 abstract 1
- 235000010233 benzoic acid Nutrition 0.000 abstract 1
- 125000004432 carbon atom Chemical group C* 0.000 abstract 1
- 125000002057 carboxymethyl group Chemical group [H]OC(=O)C([H])([H])[*] 0.000 abstract 1
- 239000003054 catalyst Substances 0.000 abstract 1
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 239000002270 dispersing agent Substances 0.000 abstract 1
- SUPCQIBBMFXVTL-UHFFFAOYSA-N ethyl 2-methylprop-2-enoate Chemical class CCOC(=O)C(C)=C SUPCQIBBMFXVTL-UHFFFAOYSA-N 0.000 abstract 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 abstract 1
- 239000012362 glacial acetic acid Substances 0.000 abstract 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 abstract 1
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 abstract 1
- 150000002825 nitriles Chemical group 0.000 abstract 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 abstract 1
- 239000008188 pellet Substances 0.000 abstract 1
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 abstract 1
- JRKICGRDRMAZLK-UHFFFAOYSA-L persulfate group Chemical group S(=O)(=O)([O-])OOS(=O)(=O)[O-] JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 abstract 1
- QHDYIMWKSCJTIM-UHFFFAOYSA-N phenyl 1-hydroxynaphthalene-2-carboxylate Chemical compound C1=CC2=CC=CC=C2C(O)=C1C(=O)OC1=CC=CC=C1 QHDYIMWKSCJTIM-UHFFFAOYSA-N 0.000 abstract 1
- PRPJEXLNOGLBCN-UHFFFAOYSA-N phenyl 4-chloro-1-hydroxynaphthalene-2-carboxylate Chemical compound C1=C(Cl)C2=CC=CC=C2C(O)=C1C(=O)OC1=CC=CC=C1 PRPJEXLNOGLBCN-UHFFFAOYSA-N 0.000 abstract 1
- 239000011541 reaction mixture Substances 0.000 abstract 1
- 238000010992 reflux Methods 0.000 abstract 1
- 239000001632 sodium acetate Substances 0.000 abstract 1
- 235000017281 sodium acetate Nutrition 0.000 abstract 1
- 235000019333 sodium laurylsulphate Nutrition 0.000 abstract 1
- 150000003440 styrenes Chemical class 0.000 abstract 1
- YBBRCQOCSYXUOC-UHFFFAOYSA-N sulfuryl dichloride Chemical group ClS(Cl)(=O)=O YBBRCQOCSYXUOC-UHFFFAOYSA-N 0.000 abstract 1
- 239000008096 xylene Substances 0.000 abstract 1
Classifications
-
- 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
- G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
- G03C7/30—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
- G03C7/388—Processes for the incorporation in the emulsion of substances liberating photographically active agents or colour-coupling substances; Solvents therefor
- G03C7/3882—Processes for the incorporation in the emulsion of substances liberating photographically active agents or colour-coupling substances; Solvents therefor characterised by the use of a specific polymer or latex
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US349348A US2772163A (en) | 1953-04-17 | 1953-04-17 | Photographic emulsions containing couplers and hydrosols |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB759409A true GB759409A (en) | 1956-10-17 |
Family
ID=23372005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB11365/54A Expired GB759409A (en) | 1953-04-17 | 1954-04-20 | Improvements in photographic emulsions containing colour couplers |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2772163A (enrdf_load_stackoverflow) |
| BE (1) | BE528163A (enrdf_load_stackoverflow) |
| DE (1) | DE965616C (enrdf_load_stackoverflow) |
| FR (1) | FR1110268A (enrdf_load_stackoverflow) |
| GB (1) | GB759409A (enrdf_load_stackoverflow) |
Families Citing this family (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL218321A (enrdf_load_stackoverflow) * | 1956-06-22 | |||
| BE565490A (enrdf_load_stackoverflow) * | 1957-03-08 | |||
| US3165407A (en) * | 1962-06-08 | 1965-01-12 | Eastman Kodak Co | Process for improving color developability of reversal photograph films |
| US3271152A (en) * | 1962-09-04 | 1966-09-06 | Eastman Kodak Co | Light-sensitive elements for color photography and process therefor |
| US3655407A (en) * | 1969-03-10 | 1972-04-11 | Eastman Kodak Co | Method of coating dilute aqueous emulsions |
| JPS4842732A (enrdf_load_stackoverflow) * | 1971-09-30 | 1973-06-21 | ||
| JPS5139853B2 (enrdf_load_stackoverflow) * | 1972-11-16 | 1976-10-30 | ||
| US3985565A (en) * | 1974-07-12 | 1976-10-12 | Eastman Kodak Company | Photothermographic, composition using a phenolic leuco dye as a reducing agent |
| BE833512A (fr) * | 1974-09-17 | 1976-03-17 | Nouvelle composition de latex charge par un compose hydrophobe, sa preparation et son application photographique | |
| GB1504949A (en) * | 1974-09-17 | 1978-03-22 | Eastman Kodak Co | Aqueous polymer latexes containing hydrophobic materials |
| US4304769A (en) * | 1974-09-17 | 1981-12-08 | Eastman Kodak Company | Process for achieving uniform, efficient distribution of hydrophobic materials through hydrophilic colloid layers and loaded latex compositions |
| US4512969A (en) * | 1974-09-17 | 1985-04-23 | Eastman Kodak Company | Compositions containing hydrophobic addenda uniformly loaded in latex polymer particles |
| JPS52102722A (en) * | 1976-02-24 | 1977-08-29 | Fuji Photo Film Co Ltd | Photosensitive material for color photography |
| US4197127A (en) * | 1976-10-08 | 1980-04-08 | Eastman Kodak Company | Photographic silver halide composition and element containing sulfonate copolymers |
| US4203716A (en) * | 1976-11-24 | 1980-05-20 | Eastman Kodak Company | Photographic elements having hydrophilic colloid layers containing hydrophobic addenda uniformly loaded in latex polymer particles |
| US4133687A (en) * | 1977-07-08 | 1979-01-09 | Eastman Kodak Company | Photographic elements having hydrophilic colloid layers containing compounds having activator precursors and hydrophobic developing agents uniformly loaded in latex polymer particles |
| JPS5432552A (en) * | 1977-08-17 | 1979-03-09 | Konishiroku Photo Ind | Method of making impregnating polymer latex composition |
| US4214047A (en) * | 1979-05-04 | 1980-07-22 | Eastman Kodak Company | Photographic elements having hydrophilic colloid layers containing hydrophobic addenda uniformly loaded in latex polymer particles |
| US4247627A (en) * | 1979-10-10 | 1981-01-27 | Eastman Kodak Company | Photographic elements having hydrophilic colloid layers containing hydrophobic ultraviolet absorbers uniformly loaded in latex polymer particles |
| US5091296A (en) * | 1990-06-26 | 1992-02-25 | Eastman Kodak Company | Polymer co-precipitated coupler dispersion |
| US5254592A (en) * | 1991-12-31 | 1993-10-19 | Sterling Drug Inc. | Multiply substituted anilines, phenols and pyridines-immunomodulating agents |
| US5258407A (en) * | 1991-12-31 | 1993-11-02 | Sterling Winthrop Inc. | 3,4-disubstituted phenols-immunomodulating agents |
| US5594047A (en) * | 1995-02-17 | 1997-01-14 | Eastman Kodak Company | Method for forming photographic dispersions comprising loaded latex polymers |
| US5582960A (en) * | 1995-02-17 | 1996-12-10 | Eastman Kodak Company | Photographic print material |
| US7776144B2 (en) | 2003-10-23 | 2010-08-17 | Fujifilm Corporation | Ink and ink set for inkjet recording |
| JP5785799B2 (ja) | 2010-07-30 | 2015-09-30 | 富士フイルム株式会社 | 新規なアゾ化合物、水溶液、インク組成物、インクジェット記録用インク、インクジェット記録方法、インクジェット記録用インクカートリッジ、及びインクジェット記録物 |
| JP5866150B2 (ja) | 2010-07-30 | 2016-02-17 | 富士フイルム株式会社 | 新規なアゾ化合物、水溶液、インク組成物、インクジェット記録用インク、インクジェット記録方法、インクジェット記録用インクカートリッジ、及びインクジェット記録物 |
| JP2014198816A (ja) | 2012-09-26 | 2014-10-23 | 富士フイルム株式会社 | アゾ化合物、水溶液、インク組成物、インクジェット記録用インク、インクジェット記録方法、インクジェット記録用インクカートリッジ、及びインクジェット記録物 |
| BR112020000553A2 (pt) | 2017-07-11 | 2020-07-21 | Vertex Pharmaceuticals Incorporated | carboxamidas como moduladores de canal de sódio |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1981102A (en) * | 1932-08-10 | 1934-11-20 | Agfa Ansco Corp | Photographic material and process of making the same |
| BE416898A (enrdf_load_stackoverflow) * | 1935-08-07 | |||
| GB505834A (en) * | 1937-10-05 | 1939-05-18 | Michele Martinez | Improvements in or relating to colour photography |
| GB524154A (en) * | 1939-01-23 | 1940-07-31 | Kodak Ltd | Improvements in colour photographic materials |
| NL65241C (enrdf_load_stackoverflow) * | 1939-01-23 | |||
| FR865774A (fr) * | 1939-05-22 | 1941-06-03 | Kodak Pathe | Perfectionnements aux produits photographiques et procédés pour les préparer |
| US2361936A (en) * | 1939-07-20 | 1944-11-07 | Chromogen Inc | Photographic materials and process of manufacturing same |
| BE470936A (enrdf_load_stackoverflow) * | 1940-02-24 | |||
| US2376005A (en) * | 1943-04-10 | 1945-05-15 | Defender Photo Supply Co Inc | Photographic emulsion and process of making same |
| US2478400A (en) * | 1945-08-17 | 1949-08-09 | Eastman Kodak Co | Silver halide photographic emulsion with developer and color coupler dispersed therein |
| BE477572A (enrdf_load_stackoverflow) * | 1946-12-11 | |||
| US2544903A (en) * | 1947-05-03 | 1951-03-13 | Eastman Kodak Co | Photosensitive coating containing dyes |
| US2500052A (en) * | 1948-06-02 | 1950-03-07 | Eastman Kodak Co | Photographic reversal copying process |
-
0
- BE BE528163D patent/BE528163A/xx unknown
-
1953
- 1953-04-17 US US349348A patent/US2772163A/en not_active Expired - Lifetime
-
1954
- 1954-04-11 DE DEE8851A patent/DE965616C/de not_active Expired
- 1954-04-16 FR FR1110268D patent/FR1110268A/fr not_active Expired
- 1954-04-20 GB GB11365/54A patent/GB759409A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1110268A (fr) | 1956-02-10 |
| US2772163A (en) | 1956-11-27 |
| DE965616C (de) | 1957-06-13 |
| BE528163A (enrdf_load_stackoverflow) |
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