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Preventing leakage

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  • B43K7/08
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Parent Industries

BPERFORMING OPERATIONS TRANSPORTING B43Writing accessories B43KIMPLEMENTS FOR WRITING OR DRAWING B43K7/00Ball-point pens

Current Industry

B43K7/08Preventing leakage
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Writing instrument
    • Patent number 11,738,589
    • Issue date Aug 29, 2023
    • THE PILOT INK CO., LTD.
    • Yoshihiro Ito
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Writing tool provided with refill
    • Patent number 11,654,711
    • Issue date May 23, 2023
    • MITSUBISHI PENCIL COMPANY, LIMITED
    • Takayuki Ikai
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Writing instrument
    • Patent number 11,179,963
    • Issue date Nov 23, 2021
    • The Pilot Ink Co., Ltd.
    • Yoshihiro Ito
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Refill for writing implements and writing implements using the same
    • Patent number 11,135,868
    • Issue date Oct 5, 2021
    • Mitsubishi Pencil Company, Limited
    • Takayuki Ikai
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Pressure difference compensation membrane
    • Patent number 10,994,568
    • Issue date May 4, 2021
    • Societe BIC
    • Anne-Lise Damiano
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Liquid ink writing instrument
    • Patent number 10,611,185
    • Issue date Apr 7, 2020
    • QINGDAO CHANGLONG STATIONERY CO., LTD.
    • Sipeng Xie
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Pressure difference compensation membrane
    • Patent number 10,518,572
    • Issue date Dec 31, 2019
    • Societe BIC
    • Anne-Lise Damiano
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Writing instrument
    • Patent number 10,493,791
    • Issue date Dec 3, 2019
    • The Pilot Ink Co., Ltd.
    • Yoshihiro Ito
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Pressure regulating device for writing tool and writing tool having...
    • Patent number 10,414,201
    • Issue date Sep 17, 2019
    • SDI Corporation
    • Szu-Yu Chen
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Oil-based ball-point pen refill, oil-based ball-point pen, and oil-...
    • Patent number 10,087,337
    • Issue date Oct 2, 2018
    • Kabushiki Kaisha Pilot Corporation
    • Akihiro Shiobara
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Writing instrument and ink cartridge
    • Patent number 10,000,088
    • Issue date Jun 19, 2018
    • Kabushiki Kaisha Pilot Corporation
    • Takanori Hoshino
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Component for writing, drawing, painting and/or cosmetic implements...
    • Patent number 9,862,226
    • Issue date Jan 9, 2018
    • STAEDTLER MARS GMBH & CO. KG
    • Andreas Thies
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Writing instrument
    • Patent number 9,844,973
    • Issue date Dec 19, 2017
    • Kabushiki Kaisha Pilot Corporation
    • Yoshihiro Ito
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Writing instrument
    • Patent number 9,636,940
    • Issue date May 2, 2017
    • Mitsubishi Pencil Company, Limited
    • Toshimi Kamitani
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Water-based ink composition and water-based ballpoint pen
    • Patent number 9,624,391
    • Issue date Apr 18, 2017
    • Zebra Co., Ltd.
    • Hiroyuki Kadowaki
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Ballpoint pen
    • Patent number 9,533,528
    • Issue date Jan 3, 2017
    • Mitsubishi Pencil Company, Limited
    • Yoshihisa Osano
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Thermochromic writing instrument
    • Patent number 9,266,379
    • Issue date Feb 23, 2016
    • The Pilot Ink Co., Ltd.
    • Yoshinori Imamura
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Thermochromic writing instrument
    • Patent number 9,233,574
    • Issue date Jan 12, 2016
    • The Pilot Ink Co., Ltd.
    • Yoshinori Imamura
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Writing instrument
    • Patent number 9,108,456
    • Issue date Aug 18, 2015
    • The Pilot Ink Co., Ltd.
    • Yoshihiro Ito
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    W/O-type emulsion ink composition for writing utensil and writing u...
    • Patent number 8,784,546
    • Issue date Jul 22, 2014
    • Zebra Co., Ltd.
    • Makoto Ugajin
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Writing instrument
    • Patent number 8,684,617
    • Issue date Apr 1, 2014
    • Mitsubishi Pencil Kabushiki Kaisha
    • Takao Koyama
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Writing pen with ink storage
    • Patent number 8,591,132
    • Issue date Nov 26, 2013
    • Tung Yik International Ltd.
    • Ve Chung Hui
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Water-based ballpoint pen
    • Patent number 8,500,354
    • Issue date Aug 6, 2013
    • The Pilot Ink Co., Ltd.
    • Youichi Takasu
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Water-based ballpoint pen
    • Patent number 8,491,213
    • Issue date Jul 23, 2013
    • The Pilot Ink Co., Ltd.
    • Youichi Takasu
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Writing instrument containing a granular material in the ink chamber
    • Patent number 8,348,540
    • Issue date Jan 8, 2013
    • Societe BIC
    • Vincent Bedhome
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Thermochromic writing instrument
    • Patent number 8,322,937
    • Issue date Dec 4, 2012
    • The Pilot Ink Co., Ltd.
    • Yoshinori Imamura
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Direct liquid-writing instrument
    • Patent number 8,113,732
    • Issue date Feb 14, 2012
    • Micro Co., Ltd.
    • Takehiko Shima
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Writing implement comprising a device for venting the reservoir
    • Patent number 8,096,725
    • Issue date Jan 17, 2012
    • Societe BIC
    • Vincent Bedhome
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Ink backflow preventive for water-based ball-point pens
    • Patent number 7,905,671
    • Issue date Mar 15, 2011
    • Sakura Color Products Corporation
    • Takeshi Omatsu
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Liquid supply device
    • Patent number 7,887,246
    • Issue date Feb 15, 2011
    • Eiji Hori
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES

Patents Applicationslast 30 patents

  • Information Patent Application

    WRITING INSTRUMENT
    • Publication number 20220080767
    • Publication date Mar 17, 2022
    • THE PILOT INK CO., LTD.
    • Yoshihiro Ito
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    WRITING TOOL PROVIDED WITH REFILL
    • Publication number 20210178803
    • Publication date Jun 17, 2021
    • MITSUBISHI PENCIL COMPANY, LIMITED
    • Takayuki IKAI
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    PRESSURE DIFFERENCE COMPENSATION MEMBRANE
    • Publication number 20200094609
    • Publication date Mar 26, 2020
    • SOCIETE BIC
    • Anne-Lise DAMIANO
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    WRITING INSTRUMENT
    • Publication number 20200047540
    • Publication date Feb 13, 2020
    • THE PILOT INK CO., LTD.
    • Yoshihiro Ito
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Application

    REFILL FOR WRITING IMPLEMENTS AND WRITING IMPLEMENTS USING THE SAME
    • Publication number 20190337323
    • Publication date Nov 7, 2019
    • MITSUBISHI PENCIL COMPANY, LIMITED
    • Takayuki Ikai
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    PRESSURE DIFFERENCE COMPENSATION MEMBRANE
    • Publication number 20190152253
    • Publication date May 23, 2019
    • SOCIETE BIC
    • Anne-Lise DAMIANO
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    WRITING INSTRUMENT
    • Publication number 20180086133
    • Publication date Mar 29, 2018
    • Yoshihiro Ito
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    OIL-BASED BALL-POINT PEN REFILL, OIL-BASED BALL-POINT PEN, AND OIL-...
    • Publication number 20160177114
    • Publication date Jun 23, 2016
    • Kabushiki Kaisha Pilot Corporation
    • Akihiro SHIOBARA
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    COMPONENT FOR WRITING, DRAWING, PAINTING AND/OR COSMETIC IMPLEMENTS...
    • Publication number 20150367673
    • Publication date Dec 24, 2015
    • J.S. Staedtler GmbH & Co. KG
    • Andreas THIES
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    W/O-TYPE EMULSION INK COMPOSITION FOR WRITING UTENSIL AND WRITING U...
    • Publication number 20130200307
    • Publication date Aug 8, 2013
    • ZEBRA CO., LTD.
    • Makoto Ugajin
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    THERMOCHROMIC WRITING INSTRUMENT
    • Publication number 20130121744
    • Publication date May 16, 2013
    • THE PILOT INK CO., LTD.
    • Yoshinori Imamura
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    WRITING INSTRUMENT
    • Publication number 20120308290
    • Publication date Dec 6, 2012
    • Yoshihiro Ito
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    WRITING PEN WITH INK STORAGE
    • Publication number 20120107036
    • Publication date May 3, 2012
    • TUNG YIK INTERNATIONAL LTD.
    • Ve Chung HUI
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    WRITING IMPLEMENT COMPRISING A DEVICE FOR VENTING THE RESERVOIR
    • Publication number 20100178098
    • Publication date Jul 15, 2010
    • SOCIETE BIC
    • Vincent Bedhome
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    WRITING INSTRUMENT CONTAINING A GRANULAR MATERIAL IN THE INK CHAMBER
    • Publication number 20100158600
    • Publication date Jun 24, 2010
    • SOCIETE BIC
    • Vincent Bedhome
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    THERMOCHROMIC WRITING INSTRUMENT
    • Publication number 20100098476
    • Publication date Apr 22, 2010
    • THE PILOT INK CO., LTD.
    • Yoshinori Imamura
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    REGULATOR STRUCTURE OF CARTRIDGE ROLLER BALL PEN
    • Publication number 20100086343
    • Publication date Apr 8, 2010
    • Hwan Yu Lung INC.
    • Shih-Lou LO
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    WRITING INSTRUMENT
    • Publication number 20100074672
    • Publication date Mar 25, 2010
    • Mitsubishi Pencil Kabushiki Kaisha
    • Takao Koyama
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    WRITING INSTRUMENT FOR HAND-HELD DEVICES
    • Publication number 20090136283
    • Publication date May 28, 2009
    • Jay Alexander Diamond
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    Direct liquid-writing instrument
    • Publication number 20090028628
    • Publication date Jan 29, 2009
    • Takehiko Shima
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    Ballpoint pen
    • Publication number 20080101849
    • Publication date May 1, 2008
    • Kabushiki Kaisha Pilot Corporation
    • Hironobu Kambayashi
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    Liquid Supply Device
    • Publication number 20080063463
    • Publication date Mar 13, 2008
    • YAOI HORI
    • Eiji Hori
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    Water-based ballpoint pen
    • Publication number 20070292200
    • Publication date Dec 20, 2007
    • THE PILOT INK CO., LTD.
    • Youichi Takasu
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    Liquid Supply Implement
    • Publication number 20070248401
    • Publication date Oct 25, 2007
    • Kotobuki & Co , Ltd.
    • Yoshio Noguchi
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    Ink Backflow Preventive from Water-Based Ball-Point Pens
    • Publication number 20070237569
    • Publication date Oct 11, 2007
    • Sakura Color Products Corporation
    • Takeshi Omatsu
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    Coating tool
    • Publication number 20070070165
    • Publication date Mar 29, 2007
    • Shigeki Yoneda
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    Follower for non-aqueous ball point pen and non-aqueous ball point pen
    • Publication number 20070020031
    • Publication date Jan 25, 2007
    • MITSUBISHI PENCIL KABUSHIKI KAISHA
    • Takayuki Ikai
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    Marking instrument
    • Publication number 20060263144
    • Publication date Nov 23, 2006
    • Liang Wang
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    APPLICATOR DEVICE
    • Publication number 20060222444
    • Publication date Oct 5, 2006
    • Schwan-STABILO Cosmetics GmbH & Co., KG
    • Friedrich Biegel
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    Applicator device
    • Publication number 20060222446
    • Publication date Oct 5, 2006
    • Schwan-STABILO Cosmetics GmbH & Co KG
    • Friedrich Biegel
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES