TREA

Keiji Kashima

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  • Kanagawa, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Backlighting device with a transparent sheet having straight ridges
    • Patent number 5,735,590
    • Issue date Apr 7, 1998
    • Tosoh Corporation
    • Keiji Kashima
    • G02 - OPTICS
  • Information Patent Grant

    Backlighting device
    • Patent number 5,730,518
    • Issue date Mar 24, 1998
    • Tosoh Corporation
    • Keiji Kashima
    • G02 - OPTICS
  • Information Patent Grant

    Backlighting device free of a bright line
    • Patent number 5,688,035
    • Issue date Nov 18, 1997
    • Tosoh Corporation
    • Keiji Kashima
    • G02 - OPTICS
  • Information Patent Grant

    Back lighting device
    • Patent number 5,647,655
    • Issue date Jul 15, 1997
    • Tosoh Corporation
    • Keiji Kashima
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    Backlighting device
    • Patent number 5,618,095
    • Issue date Apr 8, 1997
    • Tosoh Corporation
    • Keiji Kashima
    • F21 - LIGHTING
  • Information Patent Grant

    Backlighting device
    • Patent number 5,521,797
    • Issue date May 28, 1996
    • Tosoh Corporation
    • Keiji Kashima
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    Backlighting device
    • Patent number 5,442,523
    • Issue date Aug 15, 1995
    • Tosoh Corporation
    • Keiji Kashima
    • G02 - OPTICS
  • Information Patent Grant

    Back lighting device
    • Patent number 5,392,199
    • Issue date Feb 21, 1995
    • Tosoh Corporation
    • Keiji Kashima
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    Backlighting device
    • Patent number 5,289,351
    • Issue date Feb 22, 1994
    • Tosoh Corporation
    • Keiji Kashima
    • G02 - OPTICS
  • Information Patent Grant

    Back lighting device
    • Patent number 5,262,928
    • Issue date Nov 16, 1993
    • Tosoh Corporation
    • Keiji Kashima
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    Back lighting device for a panel
    • Patent number 5,093,765
    • Issue date Mar 3, 1992
    • Tosoh Corporation
    • Keiji Kashima
    • G02 - OPTICS