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Raoul F. van Ligten

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  • Coral Springs, FL, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Light polarizing spectacle lens
    • Patent number 5,412,505
    • Issue date May 2, 1995
    • van Ligten; Raoul F.
    • Raoul F. van Ligten
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Process for making a light polarizing spectacle lens
    • Patent number 5,286,419
    • Issue date Feb 15, 1994
    • BMC Industries, Inc.
    • Raoul F. van Ligten
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL