Koji Tsumaki

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Patents Grantslast 30 patents

Information Patent Grant
Electron storage ring
- Patent number 4,916,404
- Issue date Apr 10, 1990
- Hitachi, Ltd.
- Koji Tsumaki
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Electron beam stabilizing method for electron storing ring, and ele...
- Patent number 4,812,774
- Issue date Mar 14, 1989
- Hitachi, Ltd.
- Koji Tsumaki
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Method and apparatus for estimating sound source position
- Patent number 4,641,526
- Issue date Feb 10, 1987
- Hitachi, Ltd.
- Shigeru Izumi
- G01 - MEASURING TESTING