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Robert P. Johnson

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  • Glendale, AZ, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Solar-powered, liquid-hydrocarbon-fuel synthesizer
    • Patent number 7,752,845
    • Issue date Jul 13, 2010
    • Robert Paul Johnson
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Jewelry pendant
    • Patent number D306835
    • Issue date Mar 27, 1990
    • RPJ Development Company, Inc.
    • Robert P. Johnson
    • D11 - Jewelry, symbolic insignia, and ornaments
  • Information Patent Grant

    Jewelry with interchangeable elements
    • Patent number 4,879,882
    • Issue date Nov 14, 1989
    • RPJ Development Corporation
    • Robert P. Johnson
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS

Patents Applicationslast 30 patents