TREA

David A. Berry

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  • Columbus, OH, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Video disc processing
    • Patent number 4,472,337
    • Issue date Sep 18, 1984
    • RCA Corporation
    • Robert H. Huck
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    High density information disc lubricants
    • Patent number 4,351,048
    • Issue date Sep 21, 1982
    • RCA Corporation
    • David A. Berry
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    High density information disc
    • Patent number 4,346,468
    • Issue date Aug 24, 1982
    • RCA Corporation
    • Joseph R. Preston
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    High density information disc
    • Patent number 4,346,469
    • Issue date Aug 24, 1982
    • RCA Corporation
    • Louis J. Hillenbrand
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    High density information disc lubricants
    • Patent number 4,342,660
    • Issue date Aug 3, 1982
    • RCA Corporation
    • David A. Berry
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    High density information disc
    • Patent number 4,340,629
    • Issue date Jul 20, 1982
    • RCA Corporation
    • Louis J. Hillenbrand
    • C07 - ORGANIC CHEMISTRY