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with automatic feed by pressure during use of pencil

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  • CPC
  • B43K21/033
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Parent Industries

BPERFORMING OPERATIONS TRANSPORTING B43Writing accessories B43KIMPLEMENTS FOR WRITING OR DRAWING B43K21/00Propelling pencils

Current Industry

B43K21/033with automatic feed by pressure during use of pencil
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Stylus
    • Patent number 10,540,024
    • Issue date Jan 21, 2020
    • Wacom Co., Ltd.
    • Mamoru Ogata
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Writing stylus
    • Patent number 7,567,242
    • Issue date Jul 28, 2009
    • LeapFrog Enterprises, Inc.
    • Michael Perkins
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Mechanical pencil
    • Patent number 7,448,815
    • Issue date Nov 11, 2008
    • Rong-Lin Sheu
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Automatic mechanical pencil and method of assembly thereof
    • Patent number 7,237,972
    • Issue date Jul 3, 2007
    • Micro Co., Ltd.
    • Hiroyuki Kanari
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Writing stylus
    • Patent number 7,224,348
    • Issue date May 29, 2007
    • LeapFrog Enterprises, Inc.
    • Michael Perkins
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Writing stylus for electrographic position location apparatus
    • Patent number 7,068,262
    • Issue date Jun 27, 2006
    • LeapFrog Enterprises, Inc.
    • Michael Perkins
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Mechanical pencil
    • Patent number 6,908,246
    • Issue date Jun 21, 2005
    • Kotobuki & Co., Ltd.
    • Hidehei Kageyama
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Mechanical pencil
    • Patent number 4,957,384
    • Issue date Sep 18, 1990
    • Kotobuki & Co., Ltd.
    • Hidehei Kageyama
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Lead feed mechanism for mechanical pencil
    • Patent number 4,896,982
    • Issue date Jan 30, 1990
    • Kotobuki & Co. Ltd.
    • Hidehei Kageyama
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Mechanical pencil
    • Patent number 4,884,910
    • Issue date Dec 5, 1989
    • Kotobuki & Co., Ltd.
    • Hidehei Kageyama
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Lead chuck of mechanical pencil
    • Patent number 4,872,776
    • Issue date Oct 10, 1989
    • Kotobuki & Co., Ltd.
    • Hidehei Kageyama
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Mechanical pencil capable of automatically propelling successive le...
    • Patent number 4,840,508
    • Issue date Jun 20, 1989
    • Pilot Precision Kabushiki Kaisha
    • Hiroyuki Watanabe
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Automatic lead advance for mechanical pencils
    • Patent number 4,838,721
    • Issue date Jun 13, 1989
    • Pentel Kabusiki Kaisha
    • Hideaki Oikawa
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Mechanical pencil
    • Patent number 4,714,365
    • Issue date Dec 22, 1987
    • Kabushikikaisha Kotobuki
    • Hidehei Kageyama
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Mechanical pencil with automatic lead advance
    • Patent number 4,650,359
    • Issue date Mar 17, 1987
    • Pentel Kabushiki Kaisha
    • Gouji Sakaoka
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Mechanical pencil with automatic lead advance
    • Patent number 4,504,163
    • Issue date Mar 12, 1985
    • Pentel Kabushiki Kaisha
    • Junichi Hashimoto
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Mechanical pencil with removable lead feed cover
    • Patent number 4,500,220
    • Issue date Feb 19, 1985
    • Pentel Kabushiki Kaisha
    • Junichi Hashimoto
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Writing implement with automatic lead projection
    • Patent number 4,478,529
    • Issue date Oct 23, 1984
    • Kabushiki Kaisha Sakurakurepasu
    • Yasumasa Morio
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Mechanical pencil with automatic lead advance
    • Patent number 4,459,057
    • Issue date Jul 10, 1984
    • Pentel Kabushiki Kaisha
    • Junichi Hashimoto
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Tip-pushed type mechanical pencil
    • Patent number 4,211,500
    • Issue date Jul 8, 1980
    • Pentel Kabushiki Kaisha
    • Junichi Hashimoto
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Automatic pencil
    • Patent number 4,171,170
    • Issue date Oct 16, 1979
    • Kotobuki & Co., Ltd.
    • Hidehei Kageyama
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Mechanical pencil with lead feed responsive to writing pressure
    • Patent number 4,003,664
    • Issue date Jan 18, 1977
    • Kemal Butka
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2866438
    • Patent number 2,866,438
    • Issue date Dec 30, 1958
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2865330
    • Patent number 2,865,330
    • Issue date Dec 23, 1958
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES

Patents Applicationslast 30 patents

  • Information Patent Application

    STYLUS
    • Publication number 20180299977
    • Publication date Oct 18, 2018
    • WACOM CO., LTD.
    • Mamoru Ogata
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    WRITING STYLUS
    • Publication number 20080043001
    • Publication date Feb 21, 2008
    • Michael Perkins
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    Automatic mechanical pencil and method of assembly thereof
    • Publication number 20070025801
    • Publication date Feb 1, 2007
    • MICRO CO., LTD.
    • Hiroyuki Kanari
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    Writing stylus
    • Publication number 20060202976
    • Publication date Sep 14, 2006
    • LeapFrog Enterprises, Inc.
    • Michael Perkins
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    Writing stylus for electrographic position location apparatus
    • Publication number 20040246211
    • Publication date Dec 9, 2004
    • LeapFrog Enterprises, Inc.
    • Michael Perkins
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    Mechanical pencil
    • Publication number 20020090248
    • Publication date Jul 11, 2002
    • Hidehei Kageyama
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES