Tetsuo Hatanaka

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Patents Grantslast 30 patents

Information Patent Grant
Abrasive grain and manufacture for the same
- Patent number 5,304,226
- Issue date Apr 19, 1994
- Showa Denko K.K.
- Mitsuru Hasegawa
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Alumina-based ceramics materials, abrasive materials and method for...
- Patent number 5,215,551
- Issue date Jun 1, 1993
- Showa Denko K.K.
- Tetsuo Hatanaka
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Abrasive grain and method for manufacturing the same
- Patent number 5,192,339
- Issue date Mar 9, 1993
- Showa Denko K.K.
- Mitsuru Hasegawa
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...