Katsuhiro Arakawa

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Zama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Liquid cooling system for notebook computer
- Patent number 6,791,834
- Issue date Sep 14, 2004
- Hitachi, Ltd.
- Tsuyoshi Nakagawa
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Notebook computer having a liquid cooling device
- Patent number 6,519,147
- Issue date Feb 11, 2003
- Hitachi, Ltd.
- Tsuyoshi Nakagawa
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Liquid cooling system for notebook computer
- Patent number 6,519,148
- Issue date Feb 11, 2003
- Hitachi, Ltd.
- Tsuyoshi Nakagawa
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method for diagnosing the life of a solder connection
- Patent number 5,291,419
- Issue date Mar 1, 1994
- Hitachi, Ltd.
- Ryohei Satoh
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Information Patent Application
Liquid cooling system for notebook computer
- Publication number 20030081380
- Publication date May 1, 2003
- Hitachi, Ltd.
- Tsuyoshi Nakagawa
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Liquid cooling system for notebook computer
- Publication number 20020101716
- Publication date Aug 1, 2002
- Tsuyoshi Nakagawa
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Notebook computer having a liquid cooling device
- Publication number 20020075643
- Publication date Jun 20, 2002
- Tsuyoshi Nakagawa
- G06 - COMPUTING CALCULATING COUNTING