TREA

Junichi Hayakawa

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Sealing system
    • Patent number 11,698,080
    • Issue date Jul 11, 2023
    • Ebara Corporation
    • Shigeru Yoshikawa
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Sealing system
    • Patent number 11,441,571
    • Issue date Sep 13, 2022
    • Ebara Corporation
    • Shigeru Yoshikawa
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    PFC gas recovery process and apparatus
    • Patent number 6,374,635
    • Issue date Apr 23, 2002
    • Ebara Corporation
    • Junichi Hayakawa
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Cryopump
    • Patent number 5,582,017
    • Issue date Dec 10, 1996
    • Ebara Corporation
    • Nobuharu Noji
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Leg pad and spike for tripod
    • Patent number 4,940,203
    • Issue date Jul 10, 1990
    • Velbon International Corporation
    • Junichi Hayakawa
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Locking device for tripod leg sections
    • Patent number 4,932,622
    • Issue date Jun 12, 1990
    • Velbon International Corporation
    • Junichi Hayakawa
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

  • Information Patent Application

    SEALING SYSTEM
    • Publication number 20220381258
    • Publication date Dec 1, 2022
    • EBARA CORPORATION
    • Shigeru YOSHIKAWA
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    PUMP AND SEALING SYSTEM
    • Publication number 20200408219
    • Publication date Dec 31, 2020
    • EBARA CORPORATION
    • Shigeru YOSHIKAWA
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    SEALING SYSTEM
    • Publication number 20200309146
    • Publication date Oct 1, 2020
    • EBARA CORPORATION
    • Shigeru YOSHIKAWA
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Hydrogen Producing Method and Apparatus
    • Publication number 20070217995
    • Publication date Sep 20, 2007
    • Chi Matsumura
    • C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR