David Welsh

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Monroeville, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Ethylenically unsaturated ethylene and propylene ureas containing a...
- Patent number 4,632,957
- Issue date Dec 30, 1986
- PPG Industries, Inc.
- David A. Welsh
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Thermosetting catonic acrylic latices and their use in coating comp...
- Patent number 4,380,601
- Issue date Apr 19, 1983
- PPG Industries, Inc.
- David A. Welsh
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Thermoplastic elastomer blends having improved resistance to oil
- Patent number 4,209,594
- Issue date Jun 24, 1980
- ARCO Polymers, Inc.
- David Welsh
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...