Karl Kuffner

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Patents Grantslast 30 patents

Information Patent Grant
Photographic material containing oxazolinone-2 couplers
- Patent number 4,059,447
- Issue date Nov 22, 1977
- Agfa-Gevaert Aktiengesellschaft
- Ernst Meier
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Color photographic materials containing diffusion fast pyrazolone c...
- Patent number 3,973,979
- Issue date Aug 10, 1976
- AGFA-Gevaert, A.G.
- Ernst Meier
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of 3-anilino-pyrazolones-(5)
- Patent number 3,956,311
- Issue date May 11, 1976
- AGFA-Gevaert, A.G.
- Karl Kuffner
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Color photographic multilayer material with improved color density
- Patent number 3,945,829
- Issue date Mar 23, 1976
- Agfa-Gevaert Aktiengesellschaft
- Hugo Zorn
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Process for preparing 3-anilino-pyrazolones-(5)
- Patent number 3,931,221
- Issue date Jan 6, 1976
- Agfa-Gevaert Aktiengesellschaft
- Ernst Meier
- C07 - ORGANIC CHEMISTRY