TREA

John H. Konnert

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  • Reston, VA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Two-dimensional primitive root diffusor
    • Patent number 5,401,921
    • Issue date Mar 28, 1995
    • RPG Diffusor Systems, Inc.
    • Peter D'Antonio
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Grant

    Acoustical diffusing and absorbing cinder blocks
    • Patent number 5,226,267
    • Issue date Jul 13, 1993
    • RPG Diffusor Systems, Inc.
    • Peter D'Antonio
    • E04 - BUILDING
  • Information Patent Grant

    Acoustical diffusing and absorbing cinder blocks
    • Patent number 5,193,318
    • Issue date Mar 16, 1993
    • RPG Diffusor Systems, Inc.
    • Peter D'Antonio
    • E04 - BUILDING
  • Information Patent Grant

    Cinder block modular diffusor
    • Patent number 5,027,920
    • Issue date Jul 2, 1991
    • RPG Diffusor Systems, Inc.
    • Peter D'Antonio
    • E04 - BUILDING
  • Information Patent Grant

    Cinder block modular diffusor
    • Patent number 4,964,486
    • Issue date Oct 23, 1990
    • RPG Diffusor Systems, Inc.
    • Peter D'Antonio
    • E04 - BUILDING
  • Information Patent Grant

    Acoustical baffle
    • Patent number D306764
    • Issue date Mar 20, 1990
    • RPG Diffusor Systems, Inc.
    • Peter D'Antonio
    • D25 - Building units and construction elements
  • Information Patent Grant

    Sound absorbing diffusor
    • Patent number 4,821,839
    • Issue date Apr 18, 1989
    • RPG Diffusor Systems, Inc.
    • Peter D'Antonio
    • E04 - BUILDING
  • Information Patent Grant

    Acoustical baffle
    • Patent number D291601
    • Issue date Aug 25, 1987
    • RPG Diffusor Systems, Inc.
    • Peter D'Antonio
    • D25 - Building units and construction elements