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Nitrogen generation process
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Patent number 6,637,240
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Issue date Oct 28, 2003
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Air Products and Chemicals, Inc.
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John Louis Griffiths
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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Nitrogen generation process
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Patent number 6,487,877
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Issue date Dec 3, 2002
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Air Products and Chemicals, Inc.
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John Louis Griffiths
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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Air separation process
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Patent number 6,397,631
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Issue date Jun 4, 2002
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Air Products and Chemicals, Inc.
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John Louis Griffiths
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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Process for producing ultrapure nitrogen
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Patent number 6,276,172
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Issue date Aug 21, 2001
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Linde Aktiengesellschaft
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Dietrich Rottman
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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Process and plant for producing a variable gas output
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Patent number 6,273,936
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Issue date Aug 14, 2001
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L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Ge...
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Lionel Barry
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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Production of nitrogen
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Patent number 6,257,019
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Issue date Jul 10, 2001
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The BOC Group plc
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John Douglas Oakey
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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Air distillation apparatus and air distillation method
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Patent number 6,155,078
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Issue date Dec 5, 2000
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L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Ge...
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Kazuhiko Miyashita
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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Air separation
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Patent number 6,141,989
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Issue date Nov 7, 2000
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The BOC Group plc
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John Douglas Oakey
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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Air separation process
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Patent number 6,038,885
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Issue date Mar 21, 2000
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Linde Aktiengesellschaft
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Horst Corduan
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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Efficient process to produce oxygen
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Patent number 5,966,967
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Issue date Oct 19, 1999
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Air Products and Chemicals, Inc.
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Rakesh Agrawal
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...