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Toshikatsu Hayashi

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  • Kumagaya-shi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Piston ring
    • Patent number 9,885,417
    • Issue date Feb 6, 2018
    • Kabushiki Kaisha Riken
    • Kouhei Sugimoto
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Piston ring
    • Patent number 9,709,169
    • Issue date Jul 18, 2017
    • Kabushiki Kaisha Riken
    • Toshikatsu Hayashi
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Piston ring
    • Patent number 9,285,032
    • Issue date Mar 15, 2016
    • Kabushiki Kaisha Riken
    • Hayato Sasaki
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Separator for fuel cell with austenitic stainless steel substrate
    • Patent number 7,759,015
    • Issue date Jul 20, 2010
    • Kabushiki Kaisha Riken
    • Yunzhi Gao
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Electromagnetic wave absorber
    • Patent number 6,784,419
    • Issue date Aug 31, 2004
    • Kabushiki Kaisha Riken
    • Toshikatsu Hayashi
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Radio wave absorber
    • Patent number 6,771,204
    • Issue date Aug 3, 2004
    • Kabushiki Kaisha Riken
    • Toshikatsu Hayashi
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Composite electromagnetic wave absorber and method of fitting the same
    • Patent number 6,373,425
    • Issue date Apr 16, 2002
    • Kabushiki Kaisha Riken
    • Shigeo Inoue
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Porous ferrite wave absorber
    • Patent number 5,892,188
    • Issue date Apr 6, 1999
    • Kabushiki Kaisha Riken
    • Toshikatsu Hayashi
    • E04 - BUILDING

Patents Applicationslast 30 patents

  • Information Patent Application

    PISTON RING
    • Publication number 20150226327
    • Publication date Aug 13, 2015
    • Kabushiki Kaisha Riken
    • Hayato Sasaki
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    PISTON RING
    • Publication number 20140225329
    • Publication date Aug 14, 2014
    • Toshikatsu Hayashi
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Application

    PISTON RING
    • Publication number 20140047974
    • Publication date Feb 20, 2014
    • Kabushiki Kaisha Riken
    • Kouhei Sugimoto
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Application

    PISTON RING
    • Publication number 20100140880
    • Publication date Jun 10, 2010
    • Toshikatsu Hayashi
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Application

    Separator for Fuel Cell with Austenitic Stainless Steel Substrate
    • Publication number 20080050635
    • Publication date Feb 28, 2008
    • Kabushiki Kaisha Riken
    • Yunzhi Gao
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Application

    Method and system for supplying hydrogen to fuel cell
    • Publication number 20050217181
    • Publication date Oct 6, 2005
    • Kabushiki Kaisha Riken
    • Yunzhi Gao
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    Radio wave absorber
    • Publication number 20030146866
    • Publication date Aug 7, 2003
    • Toshikatsu Hayashi
    • H01 - BASIC ELECTRIC ELEMENTS