Keith E. Weerts

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Windsor, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Process for the removal of toxic cyanide and heavy metal species fr...
- Patent number 5,968,364
- Issue date Oct 19, 1999
- Henkel Corporation
- Michael J. Virnig
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Method for recovery of polymers
- Patent number 5,575,918
- Issue date Nov 19, 1996
- Henkel Corporation
- Michael J. Virnig
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Process for the removal of toxic cyanide and heavy metal species fr...
- Patent number 5,522,997
- Issue date Jun 4, 1996
- COGNIS, Inc.
- Michael J. Virnig
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...