Hiroyuki Sakai

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Iwata, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for forming valve seats
- Patent number 5,970,614
- Issue date Oct 26, 1999
- Yamaha Hatsudoki Kabushiki Kaisha
- Shuhei Adachi
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Valve seat-bonding area structures and valve seat-bonded cylinder h...
- Patent number 5,787,853
- Issue date Aug 4, 1998
- Yamaha Hatsudoki Kabushiki Kaisha
- Shuhei Adachi
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR