TREA

Robert E. Graf

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  • Southbridge, MA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    High strength ophthalmic lens
    • Patent number 4,042,405
    • Issue date Aug 16, 1977
    • American Optical Corporation
    • David A. Krohn
    • C03 - GLASS MINERAL OR SLAG WOOL
  • Information Patent Grant

    High strength ophthalmic lens
    • Patent number 4,012,131
    • Issue date Mar 15, 1977
    • American Optical Corporation
    • David A. Krohn
    • C03 - GLASS MINERAL OR SLAG WOOL
  • Information Patent Grant

    Artificial intraocular lens
    • Patent number 3,996,627
    • Issue date Dec 14, 1976
    • American Optical Corporation
    • Emil W. Deeg
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Ion exchangeable segment glass
    • Patent number 3,997,249
    • Issue date Dec 14, 1976
    • American Optical Corporation
    • David A. Krohn
    • G02 - OPTICS
  • Information Patent Grant

    High strength ophthalmic lens
    • Patent number 3,997,250
    • Issue date Dec 14, 1976
    • American Optical Corporation
    • David A. Krohn
    • C03 - GLASS MINERAL OR SLAG WOOL
  • Information Patent Grant

    Absorptive glass
    • Patent number 3,955,991
    • Issue date May 11, 1976
    • American Optical Corporation
    • Robert W. Young
    • C03 - GLASS MINERAL OR SLAG WOOL
  • Information Patent Grant

    Laser glasses with high damage threshold and method of making such...
    • Patent number 3,954,656
    • Issue date May 4, 1976
    • American Optical Corporation
    • Emil W. Deeg
    • C03 - GLASS MINERAL OR SLAG WOOL
  • Information Patent Grant

    Semiconducting glasses and the method of preparation thereof
    • Patent number 3,950,176
    • Issue date Apr 13, 1976
    • American Optical Corporation
    • Emil W. Deeg
    • C03 - GLASS MINERAL OR SLAG WOOL
  • Information Patent Grant

    Faraday rotation glasses
    • Patent number 3,935,020
    • Issue date Jan 27, 1976
    • American Optical Corporation
    • Emil W. Deeg
    • C03 - GLASS MINERAL OR SLAG WOOL