William A. Keim

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Barberton, OH, US

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Patents Grantslast 30 patents

Information Patent Grant
Microporous material
- Patent number 5,196,262
- Issue date Mar 23, 1993
- PPG Industries, Inc.
- Richard A. Schwarz
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Process for preparing chlorothiolformates
- Patent number 4,320,070
- Issue date Mar 16, 1982
- PPG Industries, Inc.
- James A. Cook
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing chlorothiolformates
- Patent number 4,268,456
- Issue date May 19, 1981
- PPG Industries, Inc.
- William A. Keim
- C07 - ORGANIC CHEMISTRY