Yoshiyuki Kubota

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Hitachi, JP

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Patents Grantslast 30 patents

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High-pressure gas laser apparatus and method of laser processing
- Patent number 5,153,892
- Issue date Oct 6, 1992
- Hitachi, Ltd.
- Yukio Kawakubo
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Fuel cell using liquid electrolyte
- Patent number 4,808,492
- Issue date Feb 28, 1989
- Hitachi Ltd.
- Norihira Uozumi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Vacuum interrupter with pressure monitoring means
- Patent number 4,163,130
- Issue date Jul 31, 1979
- Hitachi, Ltd.
- Yoshiyuki Kubota
- H01 - BASIC ELECTRIC ELEMENTS