Hirotaka Tanaka

Person

  • Tokyo, JP

Patents Grantslast 30 patents

  • Information Patent Grant

    Magnetic recording medium

    • Patent number 7,169,487
    • Issue date Jan 30, 2007
    • Hoya Corporation
    • Hisao Kawai
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Magnetic recording medium

    • Patent number 7,081,308
    • Issue date Jul 25, 2006
    • Hoya Corporation
    • Hisao Kawai
    • G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents