Yasuzi Sakuma

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Hitachi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method of and apparatus for conducting plasma welding
- Patent number 4,918,283
- Issue date Apr 17, 1990
- Hitachi, Ltd.
- Takashi Yamade
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Method of and apparatus for automatically conducting all position p...
- Patent number 4,788,409
- Issue date Nov 29, 1988
- Hitachi, Ltd.
- Takashi Yamade
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Piping travelling apparatus
- Patent number 4,770,105
- Issue date Sep 13, 1988
- Hitachi, Ltd.
- Atsushi Takagi
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Moving apparatus for a hollow curved pipe-arrangement and an operat...
- Patent number 4,644,791
- Issue date Feb 24, 1987
- Hitachi, Ltd.
- Shinji Sonoda
- G01 - MEASURING TESTING