Sumihisa Kotani

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Shimizu, JP

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Patents Grantslast 30 patents

Information Patent Grant
Scroll-type fluid machine with radial clearance between wraps
- Patent number 4,579,512
- Issue date Apr 1, 1986
- Hitachi, Ltd.
- Masao Shiibayashi
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Scroll device with suction chamber pressure relief
- Patent number 4,560,330
- Issue date Dec 24, 1985
- Hitachi, Ltd.
- Akira Murayama
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Scroll-type fluid machine with back pressure chamber biasing an orb...
- Patent number 4,557,675
- Issue date Dec 10, 1985
- Hitachi, Ltd.
- Akira Murayama
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Refrigeration system incorporating scroll type compressor
- Patent number 4,475,360
- Issue date Oct 9, 1984
- Hitachi, Ltd.
- Kazutaka Suefuji
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Refrigerating system using scroll type compressor
- Patent number 4,382,370
- Issue date May 10, 1983
- Hitachi, Ltd.
- Kazutaka Suefuji
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...