Noritsugu Umehara

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Sendai, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for polishing slight area of surface of workpiece and tool t...
- Patent number 5,404,680
- Issue date Apr 11, 1995
- Matsushita Electric Industrial Co., Ltd.
- Shinichi Mizuguchi
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Micro-abrading method and micro-abrading tool
- Patent number 5,185,957
- Issue date Feb 16, 1993
- Matsushita Electric Co., Ltd.
- Shinichi Mizuguchi
- B24 - GRINDING POLISHING
Information Patent Grant
Microscopic grinding method and microscopic grinding device
- Patent number 5,076,026
- Issue date Dec 31, 1991
- Matsushita Electric Industrial Co., Ltd.
- Shinichi Mizuguchi
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Method for grinding using a magnetic fluid and an apparatus thereof
- Patent number 4,821,466
- Issue date Apr 18, 1989
- Kato; Koji
- Koji Kato
- B24 - GRINDING POLISHING