Donald E. McWilliams

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Pittsburgh, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Chemically treated glass fibers for reinforcing polymeric materials...
- Patent number 4,518,653
- Issue date May 21, 1985
- PPG Industries, Inc.
- Donald E. McWilliams
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Method of preparing a sizing composition for treating glass fibers
- Patent number 4,370,439
- Issue date Jan 25, 1983
- PPG Industries, Inc.
- Carl A. Melle
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Stable sizing compositions used during forming of glass fibers and...
- Patent number 4,370,157
- Issue date Jan 25, 1983
- PPG Industries, Inc.
- Herbert W. Barch
- C03 - GLASS MINERAL OR SLAG WOOL