TREA

Yoshikazu Shirasaki

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Patents Grantslast 30 patents

  • Information Patent Grant

    Helmet with reinforcement
    • Patent number 5,075,904
    • Issue date Dec 31, 1991
    • Toyo Boseki Kabushiki Kaisha
    • Yoshikazu Shirasaki
    • B32 - LAYERED PRODUCTS
  • 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

    Fiber reinforced plastic and its reinforcement
    • Patent number 4,983,433
    • Issue date Jan 8, 1991
    • Toyo Boseki Kabushiki Kaisha
    • Yoshikazu Shirasaki
    • D03 - WEAVING
  • Information Patent Grant

    Composite fibrous material
    • Patent number 4,929,503
    • Issue date May 29, 1990
    • Toyo Boseki Kabushiki Kaisha
    • Yoshikazu Shirasaki
    • D02 - YARNS MECHANICAL FINISHING OF YARNS OR ROPES WARPING OR BEAMING
  • Information Patent Grant

    Fiber reinforced plastic solid or hollow molded article
    • Patent number 4,840,826
    • Issue date Jun 20, 1989
    • Toyo Boseki Kabushiki Kaisha
    • Yoshikazu Shirasaki
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL