Sylvester Sowell

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Columbus, OH, US

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Patents Grantslast 30 patents

Information Patent Grant
Thermally reversible isocyanate-based polymers
- Patent number 5,470,945
- Issue date Nov 28, 1995
- Battelle Memorial Institute
- Richard A. Markle
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Thermally-reversible isocyanate-based polymers
- Patent number 5,387,667
- Issue date Feb 7, 1995
- Battelle Memorial Institute
- Richard A. Markle
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
End of life indicator for automatic toilet cleaning devices
- Patent number 4,800,066
- Issue date Jan 24, 1989
- The Drackett Company
- Richard G. Sinclair
- G01 - MEASURING TESTING
Information Patent Grant
Method for the preparation of polyarylene sulfide with aqueous poly...
- Patent number 4,698,415
- Issue date Oct 6, 1987
- Idemitsu Petrochemical Co., Ltd.
- Richard G. Sinclair
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...