TREA

Kazuhiko Furukawa

Follow

Person

  • Kouza-gun, JP
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Knock type writing instrument
    • Patent number 10,576,775
    • Issue date Mar 3, 2020
    • Mitsubishi Pencil Company, Limited
    • Yoshiharu Namiki
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Ballpoint pen
    • Patent number 10,576,774
    • Issue date Mar 3, 2020
    • Mitsubishi Pencil Company, Limited
    • Takeo Fukumoto
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Writing instrument
    • Patent number 10,507,684
    • Issue date Dec 17, 2019
    • Mitsubishi Pencil Company, Limited
    • Tooru Nakajima
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Writing implement
    • Patent number 10,336,129
    • Issue date Jul 2, 2019
    • Mitsubishi Pencil Company, Limited
    • Tooru Nakajima
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Writing implement
    • Patent number 9,889,701
    • Issue date Feb 13, 2018
    • Mitsubishi Pencil Company, Limited
    • Takeo Fukumoto
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Ball pen
    • Patent number 9,545,813
    • Issue date Jan 17, 2017
    • Mitsubishi Pencil Company, Limited
    • Takeo Fukumoto
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Writing implement refill and writing implement
    • Patent number 9,162,515
    • Issue date Oct 20, 2015
    • Mitsubishi Pencil Co., Ltd.
    • Seiichi Maruyama
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Writing implement
    • Patent number 8,162,554
    • Issue date Apr 24, 2012
    • Mitsubishi Pencil Company Limited
    • Kazuhiko Furukawa
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Ball-point pen tip and ink refill
    • Patent number 7,862,249
    • Issue date Jan 4, 2011
    • Mitsubishi Pencil Kabushikikaisha
    • Mitsuhiro Ohashi
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Gas pressurized writing instrument and writing instrument refill
    • Patent number 7,381,004
    • Issue date Jun 3, 2008
    • Mitsubishi Pencil Kabushiki Kaisha
    • Kazuhiko Furukawa
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Gas-pressurized writing instrument and writing instrument refill
    • Patent number 7,325,992
    • Issue date Feb 5, 2008
    • Mitsubishi Pencil Kabushiki Kaisha
    • Kazuhiko Furukawa
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Writing instrument and welding method of writing point assembly and...
    • Patent number 7,303,351
    • Issue date Dec 4, 2007
    • Mitsubishi Pencil Kabushiki Kaisha
    • Kazuhiko Furukawa
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Production processes for writing instrument and ink occlusion body
    • Patent number 7,223,037
    • Issue date May 29, 2007
    • Mitsubishi Pencil Kabushiki Kaisha
    • Kazuhiko Furukawa
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Ink reservoir for writing instrument
    • Patent number 7,056,052
    • Issue date Jun 6, 2006
    • Mitsubishi Pencil Co., Ltd.
    • Shuji Ichikawa
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Writing instrument cap
    • Patent number 6,974,272
    • Issue date Dec 13, 2005
    • Mitsubishi Pencil Kabushiki Kaisha
    • Kazuhiko Furukawa
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Writing instrument, writing instrument cap and method of assembly o...
    • Patent number 6,966,718
    • Issue date Nov 22, 2005
    • Mitsubishi Pencil Kabushiki Kaisha
    • Kazuhiko Furukawa
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Collector type writing implement
    • Patent number 6,769,827
    • Issue date Aug 3, 2004
    • Mitsubishi Pencil Kabushiki Kaisha
    • Kazuhiko Furukawa
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Collector type writing implement
    • Patent number 6,619,870
    • Issue date Sep 16, 2003
    • Mitsubishi Pencil Kabushiki Kaisha
    • Kazuhiko Furukawa
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Collector type writing instrument
    • Patent number 6,619,871
    • Issue date Sep 16, 2003
    • Mitsubishi Pencil Kabushiki Kaisha
    • Kazuhiko Furukawa
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Collector type writing instrument
    • Patent number 6,602,012
    • Issue date Aug 5, 2003
    • Mitsubishi Pencil Kabushiki Kaisha
    • Kazuhiko Furukawa
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Collector type writing instrument
    • Patent number 6,588,963
    • Issue date Jul 8, 2003
    • Mitsubishi Pencil Kabushiki Kaisha
    • Kazuhiko Furukawa
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Double ended direct-feed type writing implement
    • Patent number 6,435,747
    • Issue date Aug 20, 2002
    • Mitsubishi Pencil Kabushiki Kaisha
    • Kazuhiko Furukawa
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Writing instrument
    • Patent number 6,398,442
    • Issue date Jun 4, 2002
    • Mitsubishi Pencil Kabushiki Kaishaki
    • Kazuhiko Furukawa
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Application liquid reservoir
    • Patent number 6,382,862
    • Issue date May 7, 2002
    • Mitsubishi Pencil Co., Ltd.
    • Sakae Hayao
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Collector for a writing implement
    • Patent number 6,371,676
    • Issue date Apr 16, 2002
    • Mitsubishi Pencil Kabushiki Kaisha
    • Kazuhiko Furukawa
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Ball-point pen
    • Patent number 6,340,261
    • Issue date Jan 22, 2002
    • Mitsubishi Pencil Kabushiki Kaisha
    • Kazuhiko Furukawa
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Direct-feed type writing implement
    • Patent number 6,340,259
    • Issue date Jan 22, 2002
    • Mitsubishi Pencil Kabushiki Kaisha
    • Yosuke Mito
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Direct-feed type writing implement
    • Patent number 6,302,610
    • Issue date Oct 16, 2001
    • Mitsubishi Pencil Kabushiki Kaisha
    • Yosuke Mito
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Ball point pen
    • Patent number 6,261,019
    • Issue date Jul 17, 2001
    • Mitsubishi Pencil Kabushiki Kaisha
    • Kazuhiko Furukawa
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Point assembly of a ball-point pen
    • Patent number 6,161,977
    • Issue date Dec 19, 2000
    • Mitsubishi Pencil Kabushiki Kaisha
    • Kazuhiko Furukawa
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES

Patents Applicationslast 30 patents

  • Information Patent Application

    WRITING INSTRUMENT
    • Publication number 20180370274
    • Publication date Dec 27, 2018
    • MITSUBISHI PENCIL COMPANY, LIMITED
    • Tooru Nakajima
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    KNOCK TYPE WRITING INSTRUMENT
    • Publication number 20180333980
    • Publication date Nov 22, 2018
    • MITSUBISHI PENCIL COMPANY, LIMITED
    • Yoshiharu NAMIKI
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    BALLPOINT PEN
    • Publication number 20180319200
    • Publication date Nov 8, 2018
    • MITSUBISHI PENCIL COMPANY, LIMITED
    • Takeo Fukumoto
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    WRITING IMPLEMENT
    • Publication number 20170144472
    • Publication date May 25, 2017
    • MITSUBISHI PENCIL COMPANY, LIMITED
    • Tooru Nakajima
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    WRITING IMPLEMENT
    • Publication number 20170028769
    • Publication date Feb 2, 2017
    • MITSUBISHI PENCIL COMPANY, LIMITED
    • Takeo Fukumoto
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    BALL PEN
    • Publication number 20150165812
    • Publication date Jun 18, 2015
    • MITSUBISHI PENCIL COMPANY, LIMITED
    • Takeo Fukumoto
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    WRITING IMPLEMENT REFILL AND WRITING IMPLEMENT
    • Publication number 20140140752
    • Publication date May 22, 2014
    • MITSUBISHI PENCIL COMPANY, LIMITED
    • Seiichi Maruyama
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    Ball-point pen tip and ink refill
    • Publication number 20100254750
    • Publication date Oct 7, 2010
    • Mitsuhiro Ohashi
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    WRITING IMPLEMENT
    • Publication number 20100104347
    • Publication date Apr 29, 2010
    • Kazuhiko Furukawa
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    Clip for a Writing Implement
    • Publication number 20090165261
    • Publication date Jul 2, 2009
    • Mitsubishi Pencil Co., Ltd.
    • Kazuhiko Furukawa
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    Writing ink accommodating tube
    • Publication number 20050169694
    • Publication date Aug 4, 2005
    • Mitsubishi Pencil Co., Ltd.
    • Shuji Ichikawa
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    Gas pressurization type writing utensil refill
    • Publication number 20050117960
    • Publication date Jun 2, 2005
    • Kazuhiko Furukawa
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    Gas-pressurization type writing utensil and writing utensil refill
    • Publication number 20050079001
    • Publication date Apr 14, 2005
    • mitsubishi pencil kabushiki kaisha
    • Kazuhiko Furukawa
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    Writing instrument and welding method of writing point assembly and...
    • Publication number 20050074274
    • Publication date Apr 7, 2005
    • Kazuhiko Furukawa
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    Writing material and ink absorber production method
    • Publication number 20040131415
    • Publication date Jul 8, 2004
    • Kazuhiko Furukawa
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    Writing implement, cap for writing implement, and method of assembl...
    • Publication number 20040052571
    • Publication date Mar 18, 2004
    • Kazuhiko Furukawa
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    Cap for writing implement
    • Publication number 20040028465
    • Publication date Feb 12, 2004
    • Kazuhiko Furukawa
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    Collector type writing implement
    • Publication number 20030072601
    • Publication date Apr 17, 2003
    • Kazuhiko Furukawa
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    Collector type writing instrument
    • Publication number 20030072600
    • Publication date Apr 17, 2003
    • Kazuhiko Furukawa
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    Collector type writing instrument
    • Publication number 20020192008
    • Publication date Dec 19, 2002
    • Kazuhiko Furukawa
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    Collector type writing instrument
    • Publication number 20020181996
    • Publication date Dec 5, 2002
    • Kazuhiko Furukawa
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    Application liquid reservoir
    • Publication number 20010053308
    • Publication date Dec 20, 2001
    • Mitsubishi Pencil Co., Ltd.
    • Sakae Hayao
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    Double ended direct-feed type writing implement
    • Publication number 20010012468
    • Publication date Aug 9, 2001
    • Mitsubishi Pencil Kabushiki Kaisha
    • Kazuhiko Furukawa
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    Direct-feed type writing implement
    • Publication number 20010004429
    • Publication date Jun 21, 2001
    • Mitsubishi Pencil Kabushiki Kaisha
    • Yosuke Mito
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    Direct-feed type writing implement
    • Publication number 20010004430
    • Publication date Jun 21, 2001
    • Mitsubishi Pencil Kabushiki Kaisha
    • Yosuke Mito
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES