TREA

Mitsuru Oshima

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  • Obu, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Method for manufacturing silicone contact lenses
    • Patent number 4,285,890
    • Issue date Aug 25, 1981
    • Nippon Contact Lens Manufacturing Ltd.
    • Yutaka Mizutani
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Mold for manufacturing contact lenses
    • Patent number 4,138,086
    • Issue date Feb 6, 1979
    • Nippon Contact Lens Manufacturing Ltd.
    • Yutaka Mizutani
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL