TREA

Sumihisa Yamaguchi

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  • Kanagawa, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Method for evaluating the quality of abrasive grains, polishing met...
    • Patent number 7,025,796
    • Issue date Apr 11, 2006
    • Seimi Chemical Co., Ltd.
    • Hirotsugu Komiya
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Abrasive
    • Patent number 6,602,111
    • Issue date Aug 5, 2003
    • Seimi Chemical Co., Ltd.
    • Yoshinori Fujie
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Abrasive
    • Patent number 6,428,392
    • Issue date Aug 6, 2002
    • Seimi Chemical Co., Ltd.
    • Kazuo Sunahara
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...

Patents Applicationslast 30 patents