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Noriyasu Matsufuji
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Hitachinaka, JP
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Patents Grants
last 30 patents
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Patent Grant
Centrifugal separator and administration of user and actual operati...
Patent number
6,679,821
Issue date
Jan 20, 2004
Hitachi Koko Co., Ltd.
Satoshi Numata
B04 - CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL...
Information
Patent Grant
Motor control apparatus
Patent number
6,204,627
Issue date
Mar 20, 2001
Hitachi Koki Co. Ltd.
Shinji Watanabe
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Centrifugal separator and a method of detecting unbalance of a rotor
Patent number
5,738,622
Issue date
Apr 14, 1998
Hitachi Koki Co., Ltd.
Yoshitaka Niinai
B04 - CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL...
Information
Patent Grant
Motor control system for centrifugal machine
Patent number
5,731,681
Issue date
Mar 24, 1998
Hitachi Koki Co., Ltd.
Masahiro Inaniwa
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Centrifugal apparatus with overspeed protection
Patent number
5,726,881
Issue date
Mar 10, 1998
Hitachi Koki Co,. Ltd.
Masahiro Inaniwa
G05 - CONTROLLING REGULATING
Information
Patent Grant
Motor control system for centrifuge
Patent number
5,726,550
Issue date
Mar 10, 1998
Hitachi Koki Co., Ltd.
Masahiro Inaniwa
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Centrifugal apparatus having series-implemented protection means
Patent number
5,649,893
Issue date
Jul 22, 1997
Hitachi Koki Co., Ltd.
Masahiro Inaniwa
B04 - CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL...
Information
Patent Grant
Motor control system for centrifugal machine
Patent number
5,608,301
Issue date
Mar 4, 1997
Hitachi Koki Co., Ltd.
Masahiro Inaniwa
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER