FR830985A - Process for developing photographic images - Google Patents

Process for developing photographic images

Info

Publication number: FR830985A
Authority: FR; France
Prior art keywords: photographic images; developing photographic; developing; images; photographic
Prior art date: 1936-12-21
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

Application number

Other languages

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Bayer Pharma AG

Original Assignee

Schering AG

Priority date (The priority date 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 date listed.)

1936-12-21

Filing date

1937-12-20

Publication date

1938-08-16

1937-12-20 Application filed by Schering AG filed Critical Schering AG

1938-08-16 Application granted granted Critical

1938-08-16 Publication of FR830985A publication Critical patent/FR830985A/en

Status Expired legal-status Critical Current

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
- G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
- G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
- G03C5/29—Development processes or agents therefor
- G03C5/305—Additives other than developers

Landscapes

Physics & Mathematics (AREA)
General Physics & Mathematics (AREA)
Pyridine Compounds (AREA)

FR830985D 1936-12-21 1937-12-20 Process for developing photographic images Expired FR830985A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE494468X		1936-12-21

Publications (1)

Publication Number	Publication Date
FR830985A true FR830985A (en)	1938-08-16

Family

ID=6544720

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR830985D Expired FR830985A (en)	1936-12-21	1937-12-20	Process for developing photographic images

Country Status (4)

Country	Link
US (1)	US2192891A (en)
BE (1)	BE425342A (en)
FR (1)	FR830985A (en)
GB (1)	GB494468A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2465678A (en) *	1947-03-19	1949-03-29	Donald B Ellig	Machine for sharpening knife blades
US2476541A (en) *	1947-11-18	1949-07-19	Gen Aniline & Film Corp	Process for producing multilayer color negatives containing masking images for colorcorrection purposes
US2983605A (en) *	1955-01-31	1961-05-09	Polaroid Corp	Photographic products, processes, and compositions

0
- BE BE425342D patent/BE425342A/xx unknown
1937
- 1937-12-20 FR FR830985D patent/FR830985A/en not_active Expired
- 1937-12-21 GB GB35430/37A patent/GB494468A/en not_active Expired
1938
- 1938-01-08 US US184037A patent/US2192891A/en not_active Expired - Lifetime

Also Published As

Publication number	Publication date
US2192891A (en)	1940-03-12
BE425342A (en)
GB494468A (en)	1938-10-26

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