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Hiroyoshi Yamamoto

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Patents Grantslast 30 patents

  • Information Patent Grant

    Water-based ink composition
    • Patent number 8,080,098
    • Issue date Dec 20, 2011
    • Sakura Color Products Corporation
    • Norimasa Kurihara
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Stamp marker
    • Patent number 7,931,417
    • Issue date Apr 26, 2011
    • Sakura Color Products Corporation
    • Hiroyoshi Yamamoto
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Tip unit for liquid applicator, method for producing the same, and...
    • Patent number 7,914,222
    • Issue date Mar 29, 2011
    • Sakura Color Products Corporation
    • Hiroshi Inoue
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Method of producing applicator tip
    • Patent number 7,721,402
    • Issue date May 25, 2010
    • Sakura Color Products Corporation
    • Hiroshi Inoue
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Aqueous ink composition
    • Patent number 7,538,148
    • Issue date May 26, 2009
    • Sakura Color Products Corporation
    • Hiroshi Inoue
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Ball for ball-point pen
    • Patent number 6,332,728
    • Issue date Dec 25, 2001
    • Sakura Color Products Corporation
    • Tadaaki Ito
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Erasable aqueous ink composition
    • Patent number 5,203,913
    • Issue date Apr 20, 1993
    • Sakura Color Products Corporation
    • Hiroyoshi Yamamoto
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Device for preventing drying of ink in writing instrument
    • Patent number 4,911,571
    • Issue date Mar 27, 1990
    • Sakura Color Products Corporation
    • Shigeyasu Inoue
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Aqueous ink compositions for ball-point pens
    • Patent number 4,545,818
    • Issue date Oct 8, 1985
    • United Kingdom Atomic Energy Authority
    • Shigeyasu Inoue
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...

Patents Applicationslast 30 patents

  • Information Patent Application

    ERASER
    • Publication number 20200369869
    • Publication date Nov 26, 2020
    • SAKURA COLOR PRODUCTS CORPORATION
    • Shinji TSUJIO
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    COLORED SHAPED ALUMINUM ARTICLE AND METHOD FOR MANUFACTURING SAME
    • Publication number 20170016136
    • Publication date Jan 19, 2017
    • Hiroyoshi YAMAMOTO
    • C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
  • Information Patent Application

    COLORED SHAPED ALUMINUM ARTICLE AND METHOD FOR MANUFACTURING SAME
    • Publication number 20160362808
    • Publication date Dec 15, 2016
    • SAKURA COLOR PRODUCTS CORPORATION
    • Hiroyoshi Yamamoto
    • C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
  • Information Patent Application

    Stamp marker
    • Publication number 20100021228
    • Publication date Jan 28, 2010
    • Hiroyoshi Yamamoto
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    Water-Based Ink Composition
    • Publication number 20070203259
    • Publication date Aug 30, 2007
    • Sakura Color Products Corporation
    • Norimasa Kurihara
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Application

    Tip unit for liquid applicator, method for producing the same, and...
    • Publication number 20070110507
    • Publication date May 17, 2007
    • Hiroshi Inoue
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    Method of producing applicator tip
    • Publication number 20060260112
    • Publication date Nov 23, 2006
    • Hiroshi Inoue
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    Aqueous ink composition
    • Publication number 20060233595
    • Publication date Oct 19, 2006
    • SAKURA COLOR PRODUCTS CORPORATION
    • Hiroshi Inoue
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES