Takemi Murayama

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Patents Grantslast 30 patents

Information Patent Grant
Hollow poppet valve and method for manufacturing the same
- Patent number 6,679,478
- Issue date Jan 20, 2004
- Nittan Valve Co., Ltd.
- Takemi Murayama
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Hollow poppet valve and the method for manufacturing the same
- Patent number 6,378,543
- Issue date Apr 30, 2002
- Nittan Valve Co., Ltd.
- Takemi Murayama
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

Information Patent Application
COOLANT-CONTAINING HOLLOW POPPET VALVE AND PROCESS FOR PRODUCING TH...
- Publication number 20090266314
- Publication date Oct 29, 2009
- NITTAN VALVE CO., LTD.
- Takehiko Uchiyama
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
Hollow poppet valve and method for manufacturing the same
- Publication number 20020036280
- Publication date Mar 28, 2002
- Takemi Murayama
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES