with ink-supplying valves

Industry

  • CPC
  • B43K5/08
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Patents Grantslast 30 patents

  • Information Patent Grant

    Writing instrument

    • Patent number 11,642,909
    • Issue date May 9, 2023
    • Kuretake Co., Ltd.
    • Katsuya Yoshida
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Refillable writing instrument

    • Patent number 10,889,143
    • Issue date Jan 12, 2021
    • Ganesh Ram Jangir
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Writing instrument

    • Patent number 6,086,279
    • Issue date Jul 11, 2000
    • Mcaide Enterprise Co., Ltd.
    • Ming-Hua Yen
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Writing instrument with refillable reservoir

    • Patent number 5,888,008
    • Issue date Mar 30, 1999
    • Pelikan GmbH
    • Udo Obersteller
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Refillable ink pen

    • Patent number 5,518,331
    • Issue date May 21, 1996
    • Storelic AG
    • Werner Moosmann
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    3807880

    • Patent number 3,807,880
    • Issue date Apr 30, 1974
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    3807882

    • Patent number 3,807,882
    • Issue date Apr 30, 1974
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    3806264

    • Patent number 3,806,264
    • Issue date Apr 23, 1974
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    3627433

    • Patent number 3,627,433
    • Issue date Dec 14, 1971
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    3038506

    • Patent number 3,038,506
    • Issue date Jun 12, 1962
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2753846

    • Patent number 2,753,846
    • Issue date Jul 10, 1956
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2603188

    • Patent number 2,603,188
    • Issue date Jul 15, 1952
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2509465

    • Patent number 2,509,465
    • Issue date May 30, 1950
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2449567

    • Patent number 2,449,567
    • Issue date Sep 21, 1948
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2427222

    • Patent number 2,427,222
    • Issue date Sep 9, 1947
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2391385

    • Patent number 2,391,385
    • Issue date Dec 25, 1945
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2218536

    • Patent number 2,218,536
    • Issue date Oct 22, 1940
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2187160

    • Patent number 2,187,160
    • Issue date Jan 16, 1940
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2124280

    • Patent number 2,124,280
    • Issue date Jul 19, 1938
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2107700

    • Patent number 2,107,700
    • Issue date Feb 8, 1938
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2099891

    • Patent number 2,099,891
    • Issue date Nov 23, 1937
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    2052500

    • Patent number 2,052,500
    • Issue date Aug 25, 1936
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    1908802

    • Patent number 1,908,802
    • Issue date May 16, 1933
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    1901971

    • Patent number 1,901,971
    • Issue date Mar 21, 1933
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    1898844

    • Patent number 1,898,844
    • Issue date Feb 21, 1933
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    1862586

    • Patent number 1,862,586
    • Issue date Jun 14, 1932
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    1723171

    • Patent number 1,723,171
    • Issue date Aug 6, 1929
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    1720369

    • Patent number 1,720,369
    • Issue date Jul 9, 1929
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    1634618

    • Patent number 1,634,618
    • Issue date Jul 5, 1927
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    1605282

    • Patent number 1,605,282
    • Issue date Nov 2, 1926
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES

Patents Applicationslast 30 patents

  • Information Patent Application

    Writing Instrument

    • Publication number 20220379651
    • Publication date Dec 1, 2022
    • Kuretake Co., Ltd.
    • Katsuya Yoshida
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    REFILLABLE WRITING INSTRUMENT

    • Publication number 20190241006
    • Publication date Aug 8, 2019
    • Ganesh Ram Jangir
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Application

    Pen

    • Publication number 20050036822
    • Publication date Feb 17, 2005
    • Lian Wang
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES