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Yih-Wan Tsai
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O'Hara Township, Allegheny County, PA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Reduction of NO.sub.x emissions in a glass melting furnace
Patent number
5,893,940
Issue date
Apr 13, 1999
PPG Industries, Inc.
Yih-Wan Tsai
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Method of controlling accumulation of sodium sulfate on the checker...
Patent number
5,840,093
Issue date
Nov 24, 1998
PPG Industries, Inc.
Yih-Wan Tsai
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Reduction of solid defects in glass due to refractory corrosion in...
Patent number
5,795,363
Issue date
Aug 18, 1998
PPG Industries, Inc.
George A. Pecoraro
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Heating and agitating method for multi-stage melting and refining o...
Patent number
4,816,056
Issue date
Mar 28, 1989
PPG Industries, Inc.
Yih-Wan Tsai
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Burner design for melting glass batch and the like
Patent number
4,747,772
Issue date
May 31, 1988
PPG Industries, Inc.
Yih-Wan Tsai
F27 - FURNACES KILNS OVENS RETORTS
Information
Patent Grant
Glass melting in a rotary melter
Patent number
4,738,702
Issue date
Apr 19, 1988
PPG Industries, Inc.
Jeffrey S. Yigdall
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Reduction of material buildup by means of gas jet
Patent number
4,678,491
Issue date
Jul 7, 1987
PPG Industries, Inc.
Yih-Wan Tsai
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Method and apparatus for furnace lid purging
Patent number
4,675,041
Issue date
Jun 23, 1987
PPG Industries, Inc.
Yih-Wan Tsai
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Burner design for melting glass batch and the like
Patent number
4,671,765
Issue date
Jun 9, 1987
PPG Industries, Inc.
Yih-Wan Tsai
F27 - FURNACES KILNS OVENS RETORTS
Information
Patent Grant
Energy efficient and anti-corrosive burner nozzle construction and...
Patent number
4,565,560
Issue date
Jan 21, 1986
PPG Industries, Inc.
John F. Krumwiede
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Regenerator checker packing with enhanced transverse flow
Patent number
4,527,617
Issue date
Jul 9, 1985
PPG Industries, Inc.
Robert Gagne
F28 - HEAT EXCHANGE IN GENERAL
Information
Patent Grant
Regenerator flow distribution by means of upstream and downstream a...
Patent number
4,506,726
Issue date
Mar 26, 1985
PPG Industries, Inc.
Yih-Wan Tsai
F28 - HEAT EXCHANGE IN GENERAL
Information
Patent Grant
Target wall air jet for controlling combustion air
Patent number
4,496,316
Issue date
Jan 29, 1985
PPG Industries, Inc.
Yih-Wan Tsai
F27 - FURNACES KILNS OVENS RETORTS
Information
Patent Grant
Regenerator flow distribution by means of air jets
Patent number
4,375,236
Issue date
Mar 1, 1983
PPG Industries, Inc.
Yih W. Tsai
F28 - HEAT EXCHANGE IN GENERAL
Information
Patent Grant
Regenerator flow distribution by means of a burner
Patent number
4,375,235
Issue date
Mar 1, 1983
PPG Industries, Inc.
Yih W. Tsai
F28 - HEAT EXCHANGE IN GENERAL
Information
Patent Grant
Manifold regeneration flues for regenerative furnaces
Patent number
4,257,476
Issue date
Mar 24, 1981
PPG Industries, Inc.
Yih-Wan Tsai
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Two regenerator-flue system for regenerative furnaces
Patent number
4,256,173
Issue date
Mar 17, 1981
PPG Industries, Inc.
Yih-Wan Tsai
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Regenerator flow control
Patent number
4,088,180
Issue date
May 9, 1978
PPG Industries, Inc.
Yih-Wan Tsai
F27 - FURNACES KILNS OVENS RETORTS
Information
Patent Grant
Regenerator flow control
Patent number
4,047,560
Issue date
Sep 13, 1977
PPG Industries, Inc.
Yih-Wan Tsai
F27 - FURNACES KILNS OVENS RETORTS
Information
Patent Grant
Glassmaking furnace employing heat pipes for preheating glass batch
Patent number
4,045,197
Issue date
Aug 30, 1977
PPG Industries, Inc.
Yih-Wan Tsai
F28 - HEAT EXCHANGE IN GENERAL