Masatoshi Muramatsu

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Ibaraki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Refrigerating system and operating method thereof
- Patent number 5,709,090
- Issue date Jan 20, 1998
- Hitachi, Ltd.
- Takeshi Endo
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Refrigerator and method for indicating refrigerant amount
- Patent number 5,214,918
- Issue date Jun 1, 1993
- Hitachi, Ltd.
- Kensaku Oguni
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Air-conditioner system
- Patent number 5,065,588
- Issue date Nov 19, 1991
- Hitachi, Ltd.
- Susumu Nakayama
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Scroll-type fluid machine with different terminal end wrap angles
- Patent number 4,904,170
- Issue date Feb 27, 1990
- Hitachi, Ltd.
- Kazutaka Suefuji
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Screw type vacuum pump
- Patent number 4,714,418
- Issue date Dec 22, 1987
- Hitachi, Ltd.
- Katsumi Matsubara
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...