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Naohiko Yamashita
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Hygo-ken, JP
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last 30 patents
Information
Patent Grant
Mixed gas concentration regulating method and concentration regulat...
Patent number
6,387,157
Issue date
May 14, 2002
L'Air Liquide, Societe Anonyme a Directoire et Conseil de Surveillance pour l...
Naohiko Yamashita
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Method and apparatus for recovering a gas from a gas mixture
Patent number
6,197,090
Issue date
Mar 6, 2001
L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GE...
Naohiko Yamashita
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Method and apparatus for purification of argon
Patent number
6,123,909
Issue date
Sep 26, 2000
Air Liquide Japan, Ltd.
Takao Yamamoto
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Ultra high purity nitrogen and oxygen generator unit
Patent number
6,050,106
Issue date
Apr 18, 2000
L'Air Liquide
Takao Yamamoto
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Process for the production of nitrogen by cryogenic distillation of...
Patent number
5,373,699
Issue date
Dec 20, 1994
L'Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Ge...
Sophie Gastinne
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Process for the production of nitrogen by cryogenic distillation of...
Patent number
5,325,674
Issue date
Jul 5, 1994
L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Ge...
Sophie Gastinne
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Air separating method using external cold source
Patent number
5,220,798
Issue date
Jun 22, 1993
Teisan Kabushiki Kaisha
Takashi Nagamura
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...