Patents by Inventor David P. Ching

David P. Ching has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Highly thermally conductive yet highly conformable alumina filled composition and method of making the same
    Patent number: 6031025
    Abstract: A highly thermally conductive but yet highly conformable composition is made from gel filled with alumina. The use of .alpha.-alumina in which at least 10 weight % of the .alpha.-alumina particles have a particle size of at least 74 .mu.m makes possible the high filler levels needed to attain high thermal conductivity, without causing the decrease in elongation and softness normally associated with high filler levels. Further improvements are observed if the .alpha.-alumina and the gel (or precursor thereof) are mixed with a specific energy input of at least 10 Joule/g. The input of such specific energy has the effect making the resulting composition more conformable than it otherwise would be. The composition may be internally supported by a flexible matrix such as a fabric or open-celled foam.
    Type: Grant
    Filed: February 24, 1999
    Date of Patent: February 29, 2000
    Inventors: Frank W. Mercer, David P. Ching, Zbigniew Cichocki, Robert H. Reamey
  • Highly thermally conductive yet highly comformable alumina filled composition and method of making the same
    Patent number: 5929138
    Abstract: A highly thermally conductive but yet highly conformable composition is made from gel filled with alumina. The use of .alpha.-alumina in which at least 10 weight % of the .alpha.-alumina particles have a particle size of at least 74 .mu.m makes possible the high filler levels needed to attain high thermal conductivity, without causing the decrease in elongation and softness normally associated with high filler levels. Further improvements are observed if the .alpha.-alumina and the gel (or precursor thereof) are mixed with a specific energy input of at least 10 Joule/g. The input of such specific energy has the effect making the resulting composition more conformable than it otherwise would be. The composition may be internally supported by a flexible matrix such as a fabric or open-celled foam.
    Type: Grant
    Filed: November 5, 1996
    Date of Patent: July 27, 1999
    Assignee: Raychem Corporation
    Inventors: Frank W. Mercer, David P. Ching, Zbigniew Cichocki, Robert H. Reamey