Wright M. Welton

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Oldtown, MD, US

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Patents Grantslast 30 patents

Information Patent Grant
Method of vacuum refining of glassy materials with selenium foaming...
- Patent number 4,886,539
- Issue date Dec 12, 1989
- PPG Industries, Inc.
- Richard L. Gerutti
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Foam control method for vacuum refining of glassy materials
- Patent number 4,794,860
- Issue date Jan 3, 1989
- PPG Industries, Inc.
- Wright M. Welton
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Vacuum refining of glass or the like with enhanced foaming
- Patent number 4,780,122
- Issue date Oct 25, 1988
- PPG Industries, Inc.
- Ronald L. Schwenninger
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Melting and vacuum refining of glass or the like and composition of...
- Patent number 4,738,938
- Issue date Apr 19, 1988
- PPG Industries, Inc.
- Gerald E. Kunkle
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Measuring glass surface temperature during annealing
- Patent number 3,957,475
- Issue date May 18, 1976
- PPG Industries, Inc.
- Ernest N. Schwenninger
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Method and apparatus for making molten glass with batch guiding means
- Patent number 3,941,576
- Issue date Mar 2, 1976
- PPG Industries, Inc.
- Wright M. Welton
- C03 - GLASS MINERAL OR SLAG WOOL