Graham Evans

Person

Chelmsford, GB

People

Patents Grantslast 30 patents

Information Patent Grant
Photographic material and a process for its manufacture
- Patent number 4,510,238
- Issue date Apr 9, 1985
- Ciba-Geigy AG
- Samuel B. Kingston
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Optical brightening agents and photographic materials which contain...
- Patent number 4,336,326
- Issue date Jun 22, 1982
- Ciba-Geigy AG
- Graham Evans
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Optical brightening agents and photographic materials which contain...
- Patent number 4,302,579
- Issue date Nov 24, 1981
- Ciba-Geigy AG
- Graham Evans
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Photographic elements containing amino-substituted hydroxy-pyridones
- Patent number 4,233,399
- Issue date Nov 11, 1980
- Ciba-Geigy Aktiengesellschaft
- Rainer Kitzing
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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
Amino-substituted hydroxy-pyridones
- Patent number 4,182,886
- Issue date Jan 8, 1980
- Ciba-Geigy Aktiengesellschaft
- Rainer Kitzing
- 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

Graham Evans

Person

Patents Grantslast 30 patents

Photographic material and a process for its manufacture

Optical brightening agents and photographic materials which contain...

Optical brightening agents and photographic materials which contain...

Photographic elements containing amino-substituted hydroxy-pyridones

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

Amino-substituted hydroxy-pyridones

Silver halide color photographic material containing yellow coupler