Masao Namai

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Gunma-ken, JP

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Patents Grantslast 30 patents

Information Patent Grant
Control system for motor-generator
- Patent number 6,737,836
- Issue date May 18, 2004
- Sawafuji Electric Co., Ltd.
- Masao Namai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Drive apparatus for vibrating-type compressor
- Patent number 6,456,508
- Issue date Sep 24, 2002
- Sawafuji Electric Co., Ltd.
- Masao Namai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Balancing parallel inverter systems
- Patent number 6,452,290
- Issue date Sep 17, 2002
- Sawafuji Electric Co., Ltd.
- Toru Yoshioka
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Control circuit for vibrating compressors for protecting against ex...
- Patent number 6,171,063
- Issue date Jan 9, 2001
- Sawafuji Electric Co., Ltd.
- Masao Namai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method of driving vibrating compressors
- Patent number 5,742,492
- Issue date Apr 21, 1998
- Sawafuji Electric Co., Ltd.
- Naoki Akazawa
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Patents Applicationslast 30 patents

Information Patent Application
INVERTER GENERATOR
- Publication number 20120074912
- Publication date Mar 29, 2012
- Yanmar Co., Ltd.
- Masao Namai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Control system for motor-generator
- Publication number 20020096947
- Publication date Jul 25, 2002
- Masao Namai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Inverter parallel operation system
- Publication number 20020027791
- Publication date Mar 7, 2002
- Toru Yoshioka
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC