Tatsuo Yonezawa

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Hitachi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method of welding a carbon steel and an austenitic stainless steel...
- Patent number 5,628,449
- Issue date May 13, 1997
- Hitachi, Ltd.
- Tsutomu Onuma
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Process and apparatus, for electron beam welding of a member partia...
- Patent number 5,170,028
- Issue date Dec 8, 1992
- Hitachi, Ltd.
- Takeshi Wada
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR