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Masakatu Sakamoto

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Patents Grantslast 30 patents

  • Information Patent Grant

    Speaker diaphragm
    • Patent number 5,031,720
    • Issue date Jul 16, 1991
    • Kabushiki Kaisha Kenwood
    • Shuhei Ohta
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Process for forming a crystalline diamond film
    • Patent number 4,987,002
    • Issue date Jan 22, 1991
    • Kabushiki Kaisha Kenwood
    • Masakatu Sakamoto
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...