TREA

Richard J. Hetherington

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  • Pine Plains, NY, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Zero undercut etch process
    • Patent number 5,294,520
    • Issue date Mar 15, 1994
    • International Business Machines Corporation
    • Thomas A. DeMercurio
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Method of fabricating an improved multi-layer ceramic substrate
    • Patent number 4,336,088
    • Issue date Jun 22, 1982
    • International Business Machines Corp.
    • Richard J. Hetherington
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Multi-layer ceramic substrate
    • Patent number 4,302,625
    • Issue date Nov 24, 1981
    • International Business Machines Corp.
    • Richard J. Hetherington
    • H01 - BASIC ELECTRIC ELEMENTS