TREA

Yukio Ikezawa

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Optometry apparatus
    • Patent number 7,458,686
    • Issue date Dec 2, 2008
    • Kabushiki Kaisha Topcon
    • Yukio Ikezawa
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Ophthalmologic apparatus and ophthalmologic chart
    • Patent number 7,341,349
    • Issue date Mar 11, 2008
    • Kabushiki Kaisha Topcon
    • Yasufumi Fukuma
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    White standard paint
    • Patent number 6,555,608
    • Issue date Apr 29, 2003
    • Kabushiki Kaisha Topcon
    • Takashi Takahashi
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Lens specifying device
    • Patent number 6,359,684
    • Issue date Mar 19, 2002
    • Kabushiki Kaisha Topcon
    • Yukio Ikezawa
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Lens meter
    • Patent number 6,236,453
    • Issue date May 22, 2001
    • Kabushiki Kaisha Topcon
    • Yukio Ikezawa
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Lens meter
    • Patent number 6,145,989
    • Issue date Nov 14, 2000
    • Kabushiki Kaisha TOPCOM
    • Yukio Ikezawa
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Lens meter
    • Patent number 6,061,123
    • Issue date May 9, 2000
    • Kabushiki Kaisha Topcon
    • Yukio Ikezawa
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Layout judgment apparatus and layout judgment system
    • Patent number 5,973,772
    • Issue date Oct 26, 1999
    • Kabushiki Kaisha Topcon
    • Yasufumi Fukuma
    • G02 - OPTICS
  • Information Patent Grant

    Lens specifying apparatus
    • Patent number 5,971,537
    • Issue date Oct 26, 1999
    • Kabushiki Kaisha Topcon
    • Yasufumi Fukuma
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Lens meter for measuring the optical characteristics of a lens
    • Patent number 5,917,586
    • Issue date Jun 29, 1999
    • Kabushiki Kaisha Topcon
    • Yukio Ikezawa
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Lens meter
    • Patent number 5,910,836
    • Issue date Jun 8, 1999
    • Kabushiki Kaisha Topcon
    • Yukio Ikezawa
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Lens meter
    • Patent number 5,896,194
    • Issue date Apr 20, 1999
    • Kabushiki Kaisha Topcon
    • Eiichi Yanagi
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Hidden-mark observing apparatus and hidden-mark observable lens-meter
    • Patent number 5,867,259
    • Issue date Feb 2, 1999
    • Kabushiki Kaisha Topcon
    • Eiichi Yanagi
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Lens bearer and lensometer incorporating the same
    • Patent number 5,708,501
    • Issue date Jan 13, 1998
    • Kabushiki Kaisha Topcon
    • Yukio Ikezawa
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Lens meter for testing progressive lens
    • Patent number 5,414,505
    • Issue date May 9, 1995
    • Kabushiki Kaisha Topcon
    • Yukio Ikezawa
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Lens meter and method of measurement of progressive multifocal lens...
    • Patent number 4,730,924
    • Issue date Mar 15, 1988
    • Tokyo, Kogaku, Kikai, Kabushiki, Kaisha
    • Henri Allard
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Lens judging apparatus of lens meter
    • Patent number 4,571,842
    • Issue date Feb 25, 1986
    • Tokyo Kogaku Kikai Kabushiki Kaisha
    • Yukio Ikezawa
    • G01 - MEASURING TESTING

Patents Applicationslast 30 patents

  • Information Patent Application

    Visual acuity chart displaying apparatus and optometry apparatus
    • Publication number 20060164599
    • Publication date Jul 27, 2006
    • KABUSHIKI KAISHA TOPCON
    • Yukio Ikezawa
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Application

    Optometry apparatus
    • Publication number 20050264760
    • Publication date Dec 1, 2005
    • KABUSHIKI KAISHA TOPCON
    • Yukio Ikezawa
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Application

    Ophthalmologic apparatus and ophthalmologic chart
    • Publication number 20050012896
    • Publication date Jan 20, 2005
    • Yasufumi Fukuma
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Application

    White standard paint
    • Publication number 20010009943
    • Publication date Jul 26, 2001
    • Takashi Takahashi
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Application

    LENS SPECIFYING DEVICE
    • Publication number 20010001572
    • Publication date May 24, 2001
    • YUKIO IKEZAWA
    • G01 - MEASURING TESTING