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Walter J. Olszewski
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Tonawanda, NY, US
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last 30 patents
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Patent Grant
Dual column high pressure nitrogen process
Patent number
4,439,220
Issue date
Mar 27, 1984
Union Carbide Corporation
Walter J. Olszewski
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Process to recover argon from oxygen-only air separation plant
Patent number
4,433,990
Issue date
Feb 28, 1984
Union Carbide Corporation
Walter J. Olszewski
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Cryogenic system for producing low-purity oxygen
Patent number
4,254,629
Issue date
Mar 10, 1981
Union Carbide Corporation
Walter J. Olszewski
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Cryogenic system for producing low-purity oxygen
Patent number
4,224,045
Issue date
Sep 23, 1980
Union Carbide Corporation
Walter J. Olszewski
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...