Hiroyuki Tokunaga

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Hiratsuka-city, JP

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Patents Grantslast 30 patents

Information Patent Grant
Water based hydraulic fluid and hydraulic pressure device
- Patent number 6,638,041
- Issue date Oct 28, 2003
- Komatsu Ltd.
- Hiroshi Yamamoto
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Patents Applicationslast 30 patents

Information Patent Application
Water based hydraulic fluid and hydraulic pressure device
- Publication number 20020006346
- Publication date Jan 17, 2002
- Hiroshi Yamamoto
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...