Isao Hirokawa

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Hamamatsu-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Heat exchange tube
- Patent number 8,418,753
- Issue date Apr 16, 2013
- Yutaka Giken Co., Ltd.
- Isao Hirokawa
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Valve device for silencer
- Patent number 7,066,296
- Issue date Jun 27, 2006
- Honda Giken Kogyo Kabushiki Kaisha
- Masayuki Uegane
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Exhaust system in internal combustion engine
- Patent number 5,712,454
- Issue date Jan 27, 1998
- Honda Giken Kogyo Kabushiki Kaisha
- Hidenori Ozawa
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES

Patents Applicationslast 30 patents

Information Patent Application
HEAT EXCHANGE TUBE
- Publication number 20100224349
- Publication date Sep 9, 2010
- YUTAKA GIKEN CO., LTD.
- Isao Hirokawa
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
Valve device for silencer
- Publication number 20040065503
- Publication date Apr 8, 2004
- HONDA GIKEN KOGYO KABUSHIKI KAISHA
- Masayuki Uegane
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES