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William C. Hoffman

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  • Lakewood, CO, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Highly oxygen permeable rigid contact lenses from polyacetylenes
    • Patent number 8,153,726
    • Issue date Apr 10, 2012
    • The Lagado Corporation
    • William C. Hoffman
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Light filtering contact lens method
    • Patent number 5,846,457
    • Issue date Dec 8, 1998
    • William C. Hoffman
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Light filtering contact lens
    • Patent number 5,617,154
    • Issue date Apr 1, 1997
    • Flexlens
    • William C. Hoffman
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

Patents Applicationslast 30 patents