Roger J. Hoffman

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Cumming, GA, US

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for uniformly dispersing articles in a treatme...
- Patent number 5,824,276
- Issue date Oct 20, 1998
- Ciba Vision Corporation
- Robert A. Janssen
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Impulse-jet method and apparatus for uniformly dispersing articles...
- Patent number 5,665,420
- Issue date Sep 9, 1997
- Ciba Vision Corporation
- Robert A. Janssen
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Methods of deblocking, extracting and cleaning polymeric articles w...
- Patent number 5,607,518
- Issue date Mar 4, 1997
- Ciba-Geigy Corporation
- Roger J. Hoffman
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL