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Koichi Sekiguchi
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Tochigi-ken, 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
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
Scroll compressor
Patent number
6,494,696
Issue date
Dec 17, 2002
Hitachi, Ltd.
Toshiyuki Terai
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Scroll compressor
Patent number
6,358,028
Issue date
Mar 19, 2002
Hitachi, Ltd.
Nobuo Abe
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information
Patent Grant
Heat pump apparatus
Patent number
6,301,912
Issue date
Oct 16, 2001
Hitachi, Ltd.
Toshiyuki Terai
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Scroll compressor
Patent number
6,261,072
Issue date
Jul 17, 2001
Hitachi, Ltd.
Nobuo Abe
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information
Patent Grant
Sealed compressor driven by a motor
Patent number
6,231,317
Issue date
May 15, 2001
Hitachi, Ltd.
Kazutaka Watanabe
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Closed-typed electrically-driven compressor
Patent number
6,203,290
Issue date
Mar 20, 2001
Hitachi, Ltd.
Kazumi Tamura
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Displacement type compressor and method of forming coating film
Patent number
6,079,963
Issue date
Jun 27, 2000
Hitachi, Ltd.
Yoshishige Endo
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Scroll compressor having a fixed scroll plate with groove
Patent number
5,730,588
Issue date
Mar 24, 1998
Hitachi, Ltd.
Toshiyuki Terai
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Compressor with self-aligning rotational bearing
Patent number
5,580,233
Issue date
Dec 3, 1996
Hitachi, Ltd.
Tatuya Wakana
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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...
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 compressor and method of forming coating film
Publication number
20030164352
Publication date
Sep 4, 2003
Yoshishige Endo
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
Scroll compressor
Publication number
20010026766
Publication date
Oct 4, 2001
Toshiyuki Terai
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...