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Shimizu, JP
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last 30 patents
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Patent Grant
Scroll compressor with reinforcing ribs on the orbiting scroll
Patent number
5,127,809
Issue date
Jul 7, 1992
Hitachi, Ltd.
Atushi Amata
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Capacity controllable compressor apparatus
Patent number
5,094,598
Issue date
Mar 10, 1992
Hitachi, Ltd.
Atushi Amata
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Scroll compressor with first and second oil pumps in series
Patent number
5,017,108
Issue date
May 21, 1991
Hitachi, Ltd.
Akira Murayama
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Capacity-controllable air conditioner
Patent number
4,989,414
Issue date
Feb 5, 1991
Hitachi, Ltd.
Akira Murayama
F24 - HEATING RANGES VENTILATING
Information
Patent Grant
Bearing device of sealed type scroll compressor
Patent number
RE33236
Issue date
Jun 19, 1990
Hitachi, Ltd.
Eiichi Hazaki
418 - Rotary expansible chamber devices
Information
Patent Grant
Scroll compressor with valved port for each compression chamber
Patent number
4,818,195
Issue date
Apr 4, 1989
Hitachi, Ltd.
Akira Murayama
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Air conditioner or refrigerating plant incorporating scroll compressor
Patent number
4,774,816
Issue date
Oct 4, 1988
Hitachi, Ltd.
Naoshi Uchikawa
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Sealed type scroll compressor with wire mesh oil separating member
Patent number
4,755,114
Issue date
Jul 5, 1988
Hitachi, Ltd.
Masao Shibayashi
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Scroll-type fluid machine with seal to aid lubrication
Patent number
4,743,181
Issue date
May 10, 1988
Hitachi, Ltd.
Akira Murayama
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Hermetic scroll compressor having concave spaces communicating with...
Patent number
4,730,997
Issue date
Mar 15, 1988
Hitachi, Ltd.
Takahiro Tamura
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Scroll compressor with closed compression spaces having valves to r...
Patent number
4,714,415
Issue date
Dec 22, 1987
Hitachi, Ltd.
Takao Mizuno
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Scroll-type fluid machine with configured wrap edges and grooves
Patent number
4,690,625
Issue date
Sep 1, 1987
Hitachi, Ltd.
Akira Murayama
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information
Patent Grant
Scroll compressor with pressure differential maintained for supplyi...
Patent number
4,669,962
Issue date
Jun 2, 1987
Hitachi, Ltd.
Takao Mizuno
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Scroll fluid apparatus
Patent number
4,596,521
Issue date
Jun 24, 1986
Hitachi, Ltd.
Akira Murayama
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
Bearing device of sealed type scroll compressor
Patent number
4,551,082
Issue date
Nov 5, 1985
Hitachi, Ltd.
Eiichi Hazaki
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information
Patent Grant
Scroll-type compressor
Patent number
4,545,747
Issue date
Oct 8, 1985
Hitachi, Ltd.
Takahiro Tamura
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Sealed type electrically operated compressor
Patent number
4,518,324
Issue date
May 21, 1985
Hitachi, Ltd.
Takao Mizuno
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Device for pressing orbiting scroll member in scroll type fluid mac...
Patent number
4,496,296
Issue date
Jan 29, 1985
Hitachi, Ltd.
Nobukatsu Arai
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Scroll fluid compressor with surface finished flat plates engaging...
Patent number
4,487,560
Issue date
Dec 11, 1984
Hitachi, Ltd.
Naoshi Uchikawa
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Bearing device for scroll-type compressor
Patent number
4,473,343
Issue date
Sep 25, 1984
Hitachi, Ltd.
Eiichi Hazaki
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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...