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Ronald L. Schwenninger
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Allison Park, PA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Method of reducing redox ratio of molten glass and the glass made t...
Patent number
9,133,049
Issue date
Sep 15, 2015
PPG Industries Ohio, Inc.
Larry J. Shelestak
C03 - GLASS MINERAL OR SLAG WOOL
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
Glass melter exhaust duct cleaning method and apparatus
Patent number
4,969,942
Issue date
Nov 13, 1990
PPG Industries, Inc.
Ronald L. Schwenninger
C03 - GLASS MINERAL OR SLAG WOOL
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
Refractory clad lid for heating vessel
Patent number
4,874,313
Issue date
Oct 17, 1989
PPG Industries, Inc.
Ronald L. Schwenninger
F27 - FURNACES KILNS OVENS RETORTS
Information
Patent Grant
Pulsed pressure method for vacuum refining of glassy materials
Patent number
4,849,004
Issue date
Jul 18, 1989
PPG Industries, Inc.
Ronald L. Schwenninger
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Flow control means for molten glass or the like
Patent number
4,824,462
Issue date
Apr 25, 1989
PPG Industries, Inc.
Ronald L. Schwenninger
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Lamination of oxide dispersion strengthened platinum and alloys
Patent number
4,819,859
Issue date
Apr 11, 1989
PPG Industries, Inc.
Ronald L. Schwenninger
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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
Vacuum refining of glassy materials with controlled foaming
Patent number
4,704,153
Issue date
Nov 3, 1987
PPG Industries, Inc.
Ronald L. Schwenninger
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Induction heating vessel
Patent number
4,633,481
Issue date
Dec 30, 1986
PPG Industries, Inc.
Ronald L. Schwenninger
F27 - FURNACES KILNS OVENS RETORTS
Information
Patent Grant
Metering device for molten glass and the like
Patent number
4,600,426
Issue date
Jul 15, 1986
PPG Industries, Inc.
Ronald L. Schwenninger
F27 - FURNACES KILNS OVENS RETORTS
Information
Patent Grant
Transition between batch preheating and liquefying stages apparatus
Patent number
4,496,387
Issue date
Jan 29, 1985
PPG Industries, Inc.
Robert B. Heithoff
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Float glass forming chamber with horizontal heating elements
Patent number
4,322,235
Issue date
Mar 30, 1982
PPG Industries, Inc.
Ronald L. Schwenninger
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Float glass forming chamber with cast roof
Patent number
4,311,508
Issue date
Jan 19, 1982
PPG Industries, Inc.
Ronald L. Schwenninger
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Gas cushioned ice skate edge stretcher
Patent number
4,260,407
Issue date
Apr 7, 1981
PPG Industries, Inc.
Ronald L. Schwenninger
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Method of measuring temperature of a sheet with a noncontacting-typ...
Patent number
4,185,982
Issue date
Jan 29, 1980
PPG Industries, Inc.
Ronald L. Schwenninger
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Measuring glass surface temperature during annealing
Patent number
4,114,444
Issue date
Sep 19, 1978
PPG Industries, Inc.
Ernest N. Schwenninger
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Movable submersible dam barrier for use in a glass forming chamber
Patent number
4,099,952
Issue date
Jul 11, 1978
PPG Industries, Inc.
Ronald L. Schwenninger
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Mixer for use in glass melting furnace
Patent number
3,994,710
Issue date
Nov 30, 1976
PPG Industries, Inc.
Ronald L. Schwenninger
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Apparatus for coating continuously advancing substrate
Patent number
3,964,432
Issue date
Jun 22, 1976
PPG Industries, Inc.
Ronald L. Schwenninger
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Method and apparatus for making molten glass
Patent number
3,941,577
Issue date
Mar 2, 1976
PPG Industries, Inc.
Ronald L. Schwenninger
C03 - GLASS MINERAL OR SLAG WOOL
Patents Applications
last 30 patents
Information
Patent Application
METHOD OF REDUCING REDOX RATIO OF MOLTEN GLASS AND THE GLASS MADE T...
Publication number
20130038940
Publication date
Feb 14, 2013
PPG INDUSTRIES OHIO, INC.
Larry J. Shelestak
C03 - GLASS MINERAL OR SLAG WOOL