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Masahiro Yasunaga

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  • Osaka, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Applicator
    • Patent number 6,783,295
    • Issue date Aug 31, 2004
    • Sakura Color Products Corporation
    • Masahiro Yasunaga
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Penpoint tip and an applicator having the tip incorporated therein
    • Patent number 6,494,634
    • Issue date Dec 17, 2002
    • Sakura Color Products Corporation
    • Shigeyasu Inoue
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Writing utensil and method of manufacturing the writing utensil
    • Patent number 5,938,361
    • Issue date Aug 17, 1999
    • Sakura Color Products Corp.
    • Masahiro Yasunaga
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Liquid applicator
    • Patent number 5,709,492
    • Issue date Jan 20, 1998
    • Sakura Color Products Corp.
    • Masahiro Yasunaga
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Writing implement and a fabricating method thereof
    • Patent number 5,348,411
    • Issue date Sep 20, 1994
    • Kabushiki Kaisha Sakura Kurepasu
    • Tatsuya Ozu
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Cap with air passage
    • Patent number 5,114,258
    • Issue date May 19, 1992
    • Kabushiki Kaisha Sakura Kurepasu
    • Masahiro Yasunaga
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES

Patents Applicationslast 30 patents