TREA

Takeshi Tokunaga

Follow

Person

  • Hitachi, JP
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Magnetic disc driving device
    • Patent number 4,825,315
    • Issue date Apr 25, 1989
    • Hitachi, Ltd.
    • Etsurou Hirose
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Garage door control system
    • Patent number 4,405,923
    • Issue date Sep 20, 1983
    • Hitachi, Ltd.
    • Shigeru Matsuoka
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Door operation control apparatus
    • Patent number 4,393,342
    • Issue date Jul 12, 1983
    • Hitachi, Ltd.
    • Shigeru Matsuoka
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Automatic door control apparatus
    • Patent number 4,386,398
    • Issue date May 31, 1983
    • Hitachi, Ltd.
    • Shigeru Matsuoka
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Door operation control apparatus
    • Patent number 4,383,206
    • Issue date May 10, 1983
    • Hitachi, Ltd.
    • Shigeru Matsuoka
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Garage door operation control apparatus
    • Patent number 4,365,250
    • Issue date Dec 21, 1982
    • Hitachi, Ltd.
    • Shigeru Matsuoka
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Garage door operation control apparatus
    • Patent number 4,344,252
    • Issue date Aug 17, 1982
    • Hitachi, Ltd.
    • Mitsuo Suzuki
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Door operation control apparatus
    • Patent number 4,328,540
    • Issue date May 4, 1982
    • Hitachi, Ltd.
    • Shigeru Matsuoka
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Device for driving driven member by roller chain
    • Patent number 4,311,225
    • Issue date Jan 19, 1982
    • Hitachi, Ltd.
    • Toshio Tsubaki
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES