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David C. Whritenour

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  • Franklin, MA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Photographic products and processes
    • Patent number 6,103,912
    • Issue date Aug 15, 2000
    • Polaroid Corporation
    • Charles E. Jandrue
    • C07 - ORGANIC CHEMISTRY
  • Information Patent Grant

    Image-recording materials
    • Patent number 5,811,530
    • Issue date Sep 22, 1998
    • Polaroid Corporation
    • Michael J. Arnost
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Image-recording materials
    • Patent number 5,716,754
    • Issue date Feb 10, 1998
    • Polaroid Corporation
    • Michael J. Arnost
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Benzoisothiazole azo dyes
    • Patent number 5,691,458
    • Issue date Nov 25, 1997
    • Polaroid Corporation
    • Michael J. Arnost
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Dye-providing compounds
    • Patent number 5,414,091
    • Issue date May 9, 1995
    • Polaroid Corporation
    • Efthimios Chinoporos
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Image-recording materials with cyclic 1,3-sulfur-nitrogen dye provi...
    • Patent number 5,340,689
    • Issue date Aug 23, 1994
    • Polaroid Corporation
    • Efthimios Chinoporos
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Thermochromic materials
    • Patent number 5,294,375
    • Issue date Mar 15, 1994
    • Polaroid Corporation
    • Marcis M. Kampe
    • C07 - ORGANIC CHEMISTRY
  • Information Patent Grant

    Photographic products and processes
    • Patent number 5,244,771
    • Issue date Sep 14, 1993
    • Polaroid Corporation
    • Charles E. Jandrue
    • C07 - ORGANIC CHEMISTRY