Robert A. Lawhon

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Carlisle, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Compressed, wedged float glass bottom structure
- Patent number 5,007,950
- Issue date Apr 16, 1991
- PPG Industries, Inc.
- Bert K. Krushinski
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Method of glass batch preheating and liquefying with recycling of p...
- Patent number 4,696,691
- Issue date Sep 29, 1987
- PPG Industries, Inc.
- Robert A. Lawhon
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Kiln construction
- Patent number 4,659,356
- Issue date Apr 21, 1987
- PPG Industries, Inc.
- Robert A. Lawhon
- F27 - FURNACES KILNS OVENS RETORTS
Information Patent Grant
Apparatus and method for attenuating glass ribbon
- Patent number 4,316,733
- Issue date Feb 23, 1982
- PPG Industries, Inc.
- Robert A. Lawhon
- C03 - GLASS MINERAL OR SLAG WOOL