Hitoshi KOYAMA

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Osaka-shi, Osaka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Variable valve timing mechanism and engine with variable valve timi...
- Patent number 10,072,540
- Issue date Sep 11, 2018
- YANMAR CO., LTD.
- Hitoshi Koyama
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES

Patents Applicationslast 30 patents

Information Patent Application
VARIABLE VALVE TIMING MECHANISM AND ENGINE WITH VARIABLE VALVE TIMI...
- Publication number 20160265398
- Publication date Sep 15, 2016
- YANMAR CO., LTD
- Hitoshi KOYAMA
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES