William S. Ewing

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Tarentum, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Polyol-modified polyanhydride curing agent for polyepoxide powder c...
- Patent number 5,055,524
- Issue date Oct 8, 1991
- PPG Industries, Inc.
- Paul H. Pettit
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Beta-hydroxyalkylamide cured acid polymer/polyepoxide powder coating
- Patent number 5,013,791
- Issue date May 7, 1991
- PPG Industries, Inc.
- Paul R. Kerr
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Powder coating curing system containing a beta-hydroxyalkylamide
- Patent number 4,889,890
- Issue date Dec 26, 1989
- PPG Industries, Inc.
- Paul R. Kerr
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...