Paul Tschopp

Person

Dudingen, CH

People

Patents Grantslast 30 patents

Information Patent Grant
Imidazole azo dyes
- Patent number 4,743,683
- Issue date May 10, 1988
- Ciba-Geigy AG
- Paul Tschopp
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Dibenzoxaphosphorin compounds
- Patent number 4,732,997
- Issue date Mar 22, 1988
- Ciba-Geigy AG
- Paul Tschopp
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Photographic material with heterocylic azo dye for the silver dye b...
- Patent number 4,661,437
- Issue date Apr 28, 1987
- Ciba-Geigy AG
- Paul Tschopp
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Process for stabilizing photographic material containing magenta co...
- Patent number 4,661,440
- Issue date Apr 28, 1987
- Ciba-Geigy AG
- Paul Tschopp
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Heterocyclic compounds useful as color photographic material
- Patent number 4,324,898
- Issue date Apr 13, 1982
- Ciba-Geigy AG
- Paul Tschopp
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Material for color photography
- Patent number 4,268,592
- Issue date May 19, 1981
- Ciba-Geigy AG
- Paul Tschopp
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Material for color photography
- Patent number 4,268,591
- Issue date May 19, 1981
- Ciba-Geigy AG
- Paul Tschopp
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Yellow photographic color couplers containing 3-imino-1,3,4-thiadia...
- Patent number 4,229,577
- Issue date Oct 21, 1980
- Ciba-Geigy AG
- Graham Evans
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Color photographic material
- Patent number 4,206,278
- Issue date Jun 3, 1980
- Ciba-Geigy AG
- Paul Tschopp
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Photographic material containing sulphonic acid group containing di...
- Patent number 4,118,232
- Issue date Oct 3, 1978
- Ciba-Geigy AG
- Bernhard Piller
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Silver halide color photographic material containing yellow coupler
- Patent number 4,115,121
- Issue date Sep 19, 1978
- Ciba-Geigy AG
- Graham Evans
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Sulfonic-acid-group containing disazo dyestuffs
- Patent number 4,051,123
- Issue date Sep 27, 1977
- Ciba-Geigy AG
- Bernhard Piller
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Color photographic recording material
- Patent number 4,026,709
- Issue date May 31, 1977
- Ciba-Geigy AG
- Bernhard Piller
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Color photographic recording material
- Patent number 3,984,432
- Issue date Oct 5, 1976
- Ciba-Geigy AG
- Bernhard Piller
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Heterocyclic containing disazo compounds
- Patent number 3,931,142
- Issue date Jan 6, 1976
- Ciba-Geigy AG
- John Lenoir
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Paul Tschopp

Person

Patents Grantslast 30 patents

Imidazole azo dyes

Dibenzoxaphosphorin compounds

Photographic material with heterocylic azo dye for the silver dye b...

Process for stabilizing photographic material containing magenta co...

Heterocyclic compounds useful as color photographic material

Material for color photography

Material for color photography

Yellow photographic color couplers containing 3-imino-1,3,4-thiadia...

Color photographic material

Photographic material containing sulphonic acid group containing di...

Silver halide color photographic material containing yellow coupler

Sulfonic-acid-group containing disazo dyestuffs

Color photographic recording material

Color photographic recording material

Heterocyclic containing disazo compounds