FR48840E - Perfectionnements aux produits photographiques - Google Patents
Perfectionnements aux produits photographiquesInfo
- Publication number
- FR48840E FR48840E FR48840DA FR48840E FR 48840 E FR48840 E FR 48840E FR 48840D A FR48840D A FR 48840DA FR 48840 E FR48840 E FR 48840E
- Authority
- FR
- France
- Prior art keywords
- photographic products
- photographic
- products
- 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
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
- G03C1/00—Photosensitive materials
- G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
- G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
- G03C1/33—Spot-preventing agents
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- General Physics & Mathematics (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US96855A US2256390A (en) | 1936-08-19 | 1936-08-19 | Method of preventing precipitation of alkaline-earth metal salts in gelatin |
Publications (1)
Publication Number | Publication Date |
---|---|
FR48840E true FR48840E (fr) | 1938-07-12 |
Family
ID=22259411
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR48840D Expired FR48840E (fr) | 1936-08-19 | 1937-07-23 | Perfectionnements aux produits photographiques |
Country Status (4)
Country | Link |
---|---|
US (1) | US2256390A (fr) |
DE (1) | DE700405C (fr) |
FR (1) | FR48840E (fr) |
GB (1) | GB499313A (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR965673A (fr) * | 1947-05-03 | 1950-09-19 | ||
US2624673A (en) * | 1948-03-01 | 1953-01-06 | Warren S D Co | Photosensitive printing plate having a light-sensitive coating consisting of a nonprotein colloid, a phosphate, and a chromium compound |
US2666700A (en) * | 1950-09-06 | 1954-01-19 | Du Pont | Process of preparing a light sensitive silver halide emulsion |
US2726955A (en) * | 1952-12-19 | 1955-12-13 | Du Pont | Silver halide emulsions containing antiplumming and anti-bronzing agents |
US4340665A (en) * | 1981-03-04 | 1982-07-20 | E. I. Du Pont De Nemours And Company | Silver halide film |
-
1936
- 1936-08-19 US US96855A patent/US2256390A/en not_active Expired - Lifetime
-
1937
- 1937-07-20 GB GB20025/37A patent/GB499313A/en not_active Expired
- 1937-07-23 FR FR48840D patent/FR48840E/fr not_active Expired
- 1937-08-20 DE DE1937K0147652 patent/DE700405C/de not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB499313A (en) | 1939-01-20 |
US2256390A (en) | 1941-09-16 |
DE700405C (de) | 1940-12-19 |
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