TREA

Ink cartridges, ink reservoirs

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Industry

  • CPC
  • B43K8/165
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Parent Industries

BPERFORMING OPERATIONS TRANSPORTING B43Writing accessories B43KIMPLEMENTS FOR WRITING OR DRAWING B43K8/00Pens with writing-points other than nibs or balls

Current Industry

B43K8/165Ink cartridges, ink reservoirs
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Liquid storage member for coating tools
    • Patent number 11,780,258
    • Issue date Oct 10, 2023
    • Mitsubishi Pencil Company, Limited
    • Shuji Ichikawa
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Writing instrument with displaceable safety separator
    • Patent number 4,990,012
    • Issue date Feb 5, 1991
    • J. S. Staedtler GmbH & Co.
    • Gerald Groetsch
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Tubular writting pen with superposed pressure equalization chambers
    • Patent number 4,930,921
    • Issue date Jun 5, 1990
    • Koh-I-Noor Rapidograph, Inc.
    • Gerold Anderka
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Writing fluid cartridge
    • Patent number 4,221,496
    • Issue date Sep 9, 1980
    • Mesne Koh-I-Noor Rapidograph, Inc.
    • Gerold Anderka
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Reservoir cartridge for writing pens
    • Patent number 4,217,058
    • Issue date Aug 12, 1980
    • Koh-I-Noor Rapidograph, Inc.
    • Klaus Straszewski
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    3900268
    • Patent number 3,900,268
    • Issue date Aug 19, 1975
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    3737242
    • Patent number 3,737,242
    • Issue date Jun 5, 1973
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    3399019
    • Patent number 3,399,019
    • Issue date Aug 27, 1968
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES

Patents Applicationslast 30 patents

  • Information Patent Application

    LIQUID STORAGE MEMBER FOR COATING TOOLS
    • Publication number 20220355612
    • Publication date Nov 10, 2022
    • MITSUBISHI PENCIL COMPANY, LIMITED
    • Shuji Ichikawa
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES