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Tetsuro Haga
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Hitachi, JP
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last 30 patents
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Patent Grant
Poisoning-resistant catalyst, process for production thereof, and p...
Patent number
5,330,956
Issue date
Jul 19, 1994
Hitachi, Ltd.
Tetsuro Haga
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Method of and apparatus for separating gas mixture
Patent number
5,104,426
Issue date
Apr 14, 1992
Hitachi, Ltd.
Ryokichi Yamada
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Process for producing high purity nitrogen
Patent number
4,746,332
Issue date
May 24, 1988
Hitachi, Ltd.
Masaomi Tomomura
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...