TREA

Copal Electronics Co., Ltd.

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Circumferential flow type dynamic pressure bearing
    • Patent number 5,997,180
    • Issue date Dec 7, 1999
    • Copal Electronics Co., Ltd.
    • Kachu Ishizuka
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Dynamic-pressure gas bearing
    • Patent number 5,746,515
    • Issue date May 5, 1998
    • Copal Electronics Co., Ltd.
    • Akiyoshi Takahashi
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Rotary selector switch
    • Patent number 4,894,500
    • Issue date Jan 16, 1990
    • Copal Electronics Co., Ltd.
    • Atsuo Yamazaki
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Variable resistor
    • Patent number 4,839,627
    • Issue date Jun 13, 1989
    • Copal Electronics Co., Ltd.
    • Atsushi Okazaki
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Fishing reel
    • Patent number 4,832,277
    • Issue date May 23, 1989
    • Copal Electronics Co., Ltd.
    • Hiroshi Ohtake
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
  • Information Patent Grant

    Drive and control circuit for laser diode
    • Patent number 4,807,239
    • Issue date Feb 21, 1989
    • Copal Electronics Co., Ltd.
    • Hiroshi Takano
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Level winder for double-bearing fishing reel
    • Patent number 4,799,628
    • Issue date Jan 24, 1989
    • Copal Electronics Co., Ltd.
    • Masaru Watanabe
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
  • Information Patent Grant

    DIP rotary code switch
    • Patent number 4,788,393
    • Issue date Nov 29, 1988
    • Copal Electronics Co. Ltd.
    • Masayuki Muramatsu
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Ultra-wide angle F-.theta. lens system
    • Patent number 4,787,723
    • Issue date Nov 29, 1988
    • Copal Electronics Co., Ltd.
    • Toshifumi Uetake
    • G02 - OPTICS
  • Information Patent Grant

    Fishing reel
    • Patent number 4,771,964
    • Issue date Sep 20, 1988
    • Copal Electronics Co. Ltd.
    • Masaru Watanabe
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
  • Information Patent Grant

    Potentiometer
    • Patent number 4,712,084
    • Issue date Dec 8, 1987
    • Copal Electronics Co., Ltd.
    • Atsushi Okazaki
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Variable resistance device
    • Patent number 4,627,303
    • Issue date Dec 9, 1986
    • Copal Electronics Co., Ltd.
    • Masashi Hirose
    • H01 - BASIC ELECTRIC ELEMENTS