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Hirotaka Tomizawa

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  • Tokorozawa-shi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Lubricating oil for bearing
    • Patent number 7,517,838
    • Issue date Apr 14, 2009
    • New Japan Chemical Co., Ltd.
    • Yasuyuki Kawahara
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Lubricating oil composition
    • Patent number 6,855,675
    • Issue date Feb 15, 2005
    • TonenGeneral Sekiyu K.K.
    • Michiya Yamada
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Lubricating oil for refrigerator, hydraulic fluid composition for r...
    • Patent number 6,667,285
    • Issue date Dec 23, 2003
    • New Japan Chemical Co., Ltd.
    • Yasuyuki Kawahara
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Oil filter clogging preventing agent and oil filter clogging preven...
    • Patent number 6,403,541
    • Issue date Jun 11, 2002
    • New Japan Chemical Co., Ltd.
    • Yoshikuni Kambara
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Lubricating oil composition
    • Patent number 5,880,073
    • Issue date Mar 9, 1999
    • Tonen Corporation
    • Hirotaka Tomizawa
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Lubricating oil composition
    • Patent number 5,719,109
    • Issue date Feb 17, 1998
    • Exxon Chemical Patents Inc.
    • Michide Tokashiki
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Basic metal salt of dithiocarbamic acid and lubricating oil composi...
    • Patent number 5,696,063
    • Issue date Dec 9, 1997
    • Exxon Chemical Patents Inc.
    • Michihide Tokashiki
    • C07 - ORGANIC CHEMISTRY
  • Information Patent Grant

    Lubricating oil composition for internal combustion engines
    • Patent number 5,688,748
    • Issue date Nov 18, 1997
    • Tonen Corporation
    • Hirotaka Tomizawa
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Lubricating oil composition
    • Patent number 5,605,880
    • Issue date Feb 25, 1997
    • Exxon Chemical Patents Inc.
    • Katsuya Arai
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Electroviscous fluid mixed with esterified silica fine particles an...
    • Patent number 5,603,861
    • Issue date Feb 18, 1997
    • Tonen Corporation
    • Nobuharu Umamori
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Electroviscous fluid
    • Patent number 5,387,370
    • Issue date Feb 7, 1995
    • Tonen Corporation
    • Hirotaka Tomizawa
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Lubricating oil composition containing friction modifier and corros...
    • Patent number 5,364,545
    • Issue date Nov 15, 1994
    • Tonen Corporation
    • Katsuya Arai
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Lubricating oil composition containing friction modifier and corros...
    • Patent number 5,356,547
    • Issue date Oct 18, 1994
    • Exxon Research and Engineering Co.
    • Katsuya Arai
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Traction fluid derived from cyclopentadiene oligomers
    • Patent number 5,344,582
    • Issue date Sep 6, 1994
    • Tonen Corporation
    • Noboru Umemoto
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Composition for hydraulic lubrication and coupling
    • Patent number 5,334,319
    • Issue date Aug 2, 1994
    • Tonen Corporation
    • Hirotaka Tomizawa
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Compositions for hydraulic, lubricating and coupling
    • Patent number 5,334,320
    • Issue date Aug 2, 1994
    • Tonen Corporation
    • Hirotaka Tomizawa
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Fluid for viscous coupling
    • Patent number 5,332,515
    • Issue date Jul 26, 1994
    • Tonen Corporation
    • Hirotaka Tomizawa
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Electrode for electroviscous fluid
    • Patent number 5,288,535
    • Issue date Feb 22, 1994
    • Tonen Corporation
    • Makoto Kanbara
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Stable electro-rheological fluid having a high viscosity-increasing...
    • Patent number 5,266,229
    • Issue date Nov 30, 1993
    • Tonen Corporation
    • Hirotaka Tomizawa
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Electroviscous fluid containing antioxidant and/or corrosion inhibitor
    • Patent number 5,266,230
    • Issue date Nov 30, 1993
    • Tonen Corporation
    • Hirotaka Tomizawa
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Traction fluid composition comprising a cyclohexyl diester and bran...
    • Patent number 5,259,978
    • Issue date Nov 9, 1993
    • Toa Nenryo Kogyo, K.K.
    • Narihiko Yoshimura
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Lubricating oil for refrigerator
    • Patent number 5,185,092
    • Issue date Feb 9, 1993
    • Tonen Corporation
    • Masaaki Fukuda
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Synthetic traction fluid
    • Patent number 5,171,481
    • Issue date Dec 15, 1992
    • Toa Nenryo Kogyo K.K.
    • Narihiko Yoshimura
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Synthetic traction fluid
    • Patent number 5,075,024
    • Issue date Dec 24, 1991
    • Toa Nenryo Kogyo, K.K.
    • Narihiko Yoshimura
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Traction fluid
    • Patent number 5,039,440
    • Issue date Aug 13, 1991
    • Toa Nenryo Kogyo, K.K.
    • Narihiko Yoshimura
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Traction fluid
    • Patent number 4,978,468
    • Issue date Dec 18, 1990
    • Toa Nenryo Kogyo, K.K.
    • Narihiko Yoshimura
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Synthetic traction fluid
    • Patent number 4,889,650
    • Issue date Dec 26, 1989
    • Toa Nenryo Kogyo, K.K.
    • Narihiko Yoshimura
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Synthetic traction fluid
    • Patent number 4,886,614
    • Issue date Dec 12, 1989
    • Toa Nenryo Kogyo, K.K.
    • Narihiko Yoshimura
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Traction fluid
    • Patent number 4,886,613
    • Issue date Dec 12, 1989
    • Toa Nenryo Kogyo, K.K.
    • Narihiko Yoshimura
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...

Patents Applicationslast 30 patents

  • Information Patent Application

    Lubricating oil for bearing
    • Publication number 20060019840
    • Publication date Jan 26, 2006
    • New Japan Chemical Co., Ltd.
    • Yasuyuki Kawahara
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...