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Tetsunobu Okamura
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Tochigi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Heat pump hot-water supply system
Patent number
7,234,646
Issue date
Jun 26, 2007
Hitachi Appliances, Inc.
Kenichi Saitoh
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Heat pump hot-water supply system
Patent number
6,874,694
Issue date
Apr 5, 2005
Hitachi, Ltd.
Kenichi Saitoh
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Heat pump hot-water supply system
Patent number
6,837,443
Issue date
Jan 4, 2005
Hitachi, Ltd.
Kenichi Saitoh
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Method of controlling an air conditioning apparatus and air conditi...
Patent number
5,197,293
Issue date
Mar 30, 1993
Hitachi, Ltd.
Tetsunobu Okamura
F24 - HEATING RANGES VENTILATING
Patents Applications
last 30 patents
Information
Patent Application
Heat pump hot-water supply system
Publication number
20050167516
Publication date
Aug 4, 2005
Kenichi Saitoh
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Application
Heat pump hot-water supply system
Publication number
20040200905
Publication date
Oct 14, 2004
Kenichi Saitoh
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Application
Heat pump hot-water supply system
Publication number
20030178498
Publication date
Sep 25, 2003
Kenichi Saitoh
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...