Werner H. Gerber

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Riehen, CH

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Patents Grantslast 30 patents

Information Patent Grant
Method of producing forgery-proof colored printed articles
- Patent number 6,013,307
- Issue date Jan 11, 2000
- Ciba Specialty Chemicals Corporation
- Hanspeter Hauser
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Process and apparatus for the preparation of color formulations uti...
- Patent number 5,003,500
- Issue date Mar 26, 1991
- Ciba-Geigy Corporation
- Werner H. Gerber
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL