Takeshi Toyoshima

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Ibaraki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Vacuum pump with helically threaded cylinders
- Patent number 5,154,572
- Issue date Oct 13, 1992
- Hitachi Koki Company Limited
- Takeshi Toyoshima
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Molecular drag pump with rotors moving in same direction
- Patent number 5,120,208
- Issue date Jun 9, 1992
- Hitachi Koki Company Limited
- Takeshi Toyoshima
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...