TREA

Yoshiaki Hisagen

Follow

Person

  • Sendai, JP
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Method for manufacturing electrode
    • Patent number 6,033,722
    • Issue date Mar 7, 2000
    • Sony Corporation
    • Takeshi Koike
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Magnetic recording medium
    • Patent number 4,443,490
    • Issue date Apr 17, 1984
    • Sony Corporation
    • Kaoru Nakajima
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Magnetic recording medium
    • Patent number 4,368,239
    • Issue date Jan 11, 1983
    • Sony Corporation
    • Kaoru Nakajima
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Magnetic recording medium
    • Patent number 4,172,176
    • Issue date Oct 23, 1979
    • Sony Corporation
    • Toshiro Tanaka
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Magnetic recording medium
    • Patent number 4,156,052
    • Issue date May 22, 1979
    • Sony Corporation
    • Toshiro Tanaka
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Magnetic recording medium
    • Patent number 4,131,717
    • Issue date Dec 26, 1978
    • Sony Corporation
    • Takayasu Hirano
    • G11 - INFORMATION STORAGE