Klaus Bergmann

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Mainz-Bretzenheim, DE

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Patents Grantslast 30 patents

Information Patent Grant
2-acylamino-9-arylacridines, process for their preparation and phot...
- Patent number 5,834,157
- Issue date Nov 10, 1998
- AGFA-Gevaert A.G.
- Siegfried Scheler
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Light-sensitive mixture containing an 0-naphthoquinonediazide-sulfo...
- Patent number 5,413,899
- Issue date May 9, 1995
- Hoechst Aktiengesellschaft
- Siegfried Scheler
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Process for preparing 7-hydroxy-1,2-naphthoquinone-2-diazide-4-sulf...
- Patent number 5,192,640
- Issue date Mar 9, 1993
- Hoechst Aktiengesellschaft
- Siegfried Scheler
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Radiation-sensitive compounds, radiation-sensitive mixture prepared...
- Patent number 5,114,816
- Issue date May 19, 1992
- Hoechst Aktiengesellschaft
- Siegfried Scheler
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Substituted 1,2-naphthoquinone-2-diazide-4-sulfonic acids and proce...
- Patent number 5,077,395
- Issue date Dec 31, 1991
- Hoechst Aktiengesellschaft
- Siegfried Scheler
- C07 - ORGANIC CHEMISTRY