Jakob Kuhn

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Marly, CH

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Patents Grantslast 30 patents

Information Patent Grant
Photographic four-color material for the silver dye bleach process
- Patent number 4,837,133
- Issue date Jun 6, 1989
- Ciba-Geigy AG
- Jakob Kuhn
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Polyazo dyestuffs having high UV absorption
- Patent number 4,701,525
- Issue date Oct 20, 1987
- Ciba-Geigy AG
- Thomas-Markus Rohr
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
UV-absorbent compounds, process for their preparation and their use...
- Patent number 4,609,609
- Issue date Sep 2, 1986
- Ciba-Geigy AG
- Thomas-Markus Rohr
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY