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Ichiro Gyobu
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Dejimamura, JP
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last 30 patents
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Patent Grant
Vacuum system with a secondary gas also connected to the roughing p...
Patent number
5,062,771
Issue date
Nov 5, 1991
Hitachi, Ltd.
Akihiko Satou
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Vacuum pump
Patent number
4,904,155
Issue date
Feb 27, 1990
Hitachi, Ltd.
Takashi Nagaoka
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Method for LPCVD of semiconductors using oil free vacuum pumps
Patent number
4,835,114
Issue date
May 30, 1989
Hitachi, Ltd.
Akihiko Satou
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Vaned diffuser
Patent number
4,354,802
Issue date
Oct 19, 1982
Hitachi, Ltd.
Hideo Nishida
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES