Yukio Serizawa

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Tochigi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Rotary compressor with shaft balancers
- Patent number 5,230,616
- Issue date Jul 27, 1993
- Hitachi, Ltd.
- Yukio Serizawa
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Rotary compressor having an eccentric pin with reduced axial dimension
- Patent number 5,104,297
- Issue date Apr 14, 1992
- Hitachi, Ltd.
- Koichi Sekiguchi
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Rotary fluid machine having hollow vanes and refrigeration apparatu...
- Patent number 5,090,882
- Issue date Feb 25, 1992
- Hitachi, Ltd.
- Yukio Serizawa
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Rotary compressor
- Patent number 5,030,073
- Issue date Jul 9, 1991
- Hitachi, Ltd.
- Yukio Serizawa
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Hermetic rotary compressor with balancing weights
- Patent number 4,915,554
- Issue date Apr 10, 1990
- Hitachi, Ltd.
- Yukio Serizawa
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...