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Kenichi Oshima
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Shimotsuga-gun, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Scroll compressor having a valved back pressure chamber and a bypas...
Patent number
7,354,259
Issue date
Apr 8, 2008
Hitachi, Ltd.
Isamu Tsubono
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Scroll compressor
Patent number
7,137,796
Issue date
Nov 21, 2006
Hitachi, Ltd.
Isamu Tsubono
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Scroll compressor having a back-pressure chamber control valve
Patent number
7,118,358
Issue date
Oct 10, 2006
Hitachi, Ltd.
Isamu Tsubono
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Compressor including tapered discharged valve and valve seat
Patent number
6,905,318
Issue date
Jun 14, 2005
Hitachi, Ltd.
Takeshi Kouno
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Scroll compressor having a valved back pressure chamber and a bypas...
Patent number
6,769,888
Issue date
Aug 3, 2004
Hitachi, Ltd.
Isamu Tsubono
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Displacement type fluid machine
Patent number
6,637,550
Issue date
Oct 28, 2003
Hitachi, Ltd.
Masaki Koyama
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Scroll compressor having a valved back-pressure chamber and a bypas...
Patent number
6,589,035
Issue date
Jul 8, 2003
Hitachi, Ltd.
Isamu Tsubono
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Rotary piston compressor and refrigerating equipment
Patent number
6,336,336
Issue date
Jan 8, 2002
Hitachi, Ltd.
Shigeya Kawaminami
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Rotary compressor
Patent number
6,270,329
Issue date
Aug 7, 2001
Hiatchi, Ltd.
Kenichi Oshima
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Displacement fluid machine
Patent number
6,217,303
Issue date
Apr 17, 2001
Hitachi, Ltd.
Hirokatsu Kohsokabe
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information
Patent Grant
Displacement fluid machine
Patent number
6,099,279
Issue date
Aug 8, 2000
Hitachi, Ltd.
Hirokatsu Kohsokabe
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information
Patent Grant
Scroll type fluid machine having wraps formed of circular arcs
Patent number
5,938,417
Issue date
Aug 17, 1999
Hitachi, Ltd.
Kunihiko Takao
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Scroll compressor and air conditioner using the same
Patent number
5,345,785
Issue date
Sep 13, 1994
Hitachi, Ltd.
Kazuo Sekigami
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Patents Applications
last 30 patents
Information
Patent Application
Scroll compressor
Publication number
20060057010
Publication date
Mar 16, 2006
Isamu Tsubono
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Application
Scroll compressor
Publication number
20060051226
Publication date
Mar 9, 2006
Isamu Tsubono
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Application
Scroll compressor
Publication number
20040247476
Publication date
Dec 9, 2004
Isamu Tsubono
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Application
Scroll compressor
Publication number
20030190247
Publication date
Oct 9, 2003
Isamu Tsubono
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Application
Displacement type fluid machine
Publication number
20020033305
Publication date
Mar 21, 2002
Masaki Koyama
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Application
Compressor
Publication number
20020012595
Publication date
Jan 31, 2002
Takeshi Kouno
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...