Evelyn Fischer

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Weil am Rhein, DE

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Patents Grantslast 30 patents

Information Patent Grant
Polymerisable photochromic naphthacenediones, polymers of these mon...
- Patent number 5,623,040
- Issue date Apr 22, 1997
- Ciba-Geigy Corporation
- Evelyn Fischer
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Photochromic composition
- Patent number 5,432,049
- Issue date Jul 11, 1995
- Ciba-Geigy Corporation
- Evelyn Fischer
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Photochromic compounds, a process for their preparation, and their use
- Patent number 5,310,909
- Issue date May 10, 1994
- Ciba-Geigy Corporation
- Evelyn Fischer
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Photochromic naphthacenequinones, process for their preparation and...
- Patent number 5,300,663
- Issue date Apr 5, 1994
- Ciba-Geigy Corporation
- Walter Fischer
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Photochromic naphthacenequinones, process for their preparation and...
- Patent number 5,206,395
- Issue date Apr 27, 1993
- Ciba-Geigy Corporation
- Walter Fischer
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Photochromic naphthacenequinones, process for their preparation and...
- Patent number 5,177,227
- Issue date Jan 5, 1993
- Ciba-Geigy Corporation
- Walter Fischer
- C07 - ORGANIC CHEMISTRY