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Harry Cheung
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Williamsville, NY, US
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Patents Grants
last 30 patents
Information
Patent Grant
Method for generating a cold gas
Patent number
6,301,923
Issue date
Oct 16, 2001
Praxair Technology, Inc.
Dante Patrick Bonaquist
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Method for generating a cold gas
Patent number
6,250,096
Issue date
Jun 26, 2001
Praxair Technology, Inc.
Dante Patrick Bonaquist
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Side column cryogenic rectification system for producing lower puri...
Patent number
5,463,871
Issue date
Nov 7, 1995
Praxair Technology, Inc.
Harry Cheung
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Cryogenic rectification system with improved recovery
Patent number
5,385,024
Issue date
Jan 31, 1995
Praxair Technology, Inc.
Mark J. Roberts
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Single column cryogenic rectification system for producing nitrogen...
Patent number
5,303,556
Issue date
Apr 19, 1994
Praxair Technology, Inc.
James R. Dray
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Cryogenic air separation using random packing
Patent number
5,237,823
Issue date
Aug 24, 1993
Praxair Technology, Inc.
Harry Cheung
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Cryogenic rectification system for producing nitrogen and ultra hig...
Patent number
5,195,324
Issue date
Mar 23, 1993
Prazair Technology, Inc.
Harry Cheung
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Method and apparatus for producing elevated pressure nitrogen
Patent number
5,098,457
Issue date
Mar 24, 1992
Union Carbide Industrial Gases Technology Corporation
Harry Cheung
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Xenon production system
Patent number
5,069,698
Issue date
Dec 3, 1991
Union Carbide Industrial Gases Technology Corporation
Harry Cheung
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Patents Applications
last 30 patents
Information
Patent Application
Method for generating a cold gas
Publication number
20010035026
Publication date
Nov 1, 2001
Dante Patrick Bonaquist
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...