David W. Griffiths

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St. Louis, MO, US

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Patents Grantslast 30 patents

Information Patent Grant
Quaternary ammonium adducts of polymerizable tertiary ammonium salt...
- Patent number 4,310,472
- Issue date Jan 12, 1982
- Petrolite Corporation
- Rudolf S. Buriks
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Quaternary ammonium adducts of polymerizable tertiary ammonium salt...
- Patent number 4,230,839
- Issue date Oct 28, 1980
- Petrolite Corporation
- Rudolf S. Buriks
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for clarifying aqueous systems employing quaternary ammoniu...
- Patent number 4,224,150
- Issue date Sep 23, 1980
- Petrolite Corporation
- Rudolf S. Buriks
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Quaternary ammonium adducts of polymerizable tertiary ammonium salt...
- Patent number 4,179,549
- Issue date Dec 18, 1979
- Petrolite Corporation
- Rudolf S. Buriks
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...