Patents by Inventor Randall J. Bertrand

Randall J. Bertrand 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).

  • Liquid thermal interface having mixture of linearly structured polymer doped crosslinked networks and related method
    Patent number: 7808099
    Abstract: A liquid thermal interface (LTI) including a mixture of a linearly structured polymer doped with crosslinked networks and related method are presented. The LTI exhibits reduced liquid polymer macromolecule mobility, and thus increased surface tension. An embodiment of the method includes mixing a crosslinker with a linearly structured polymer to form a mixture, wherein the crosslinker includes a base agent including a vinyl-terminated or branched polydimethylsiloxane, and a curing agent including a hydrogen-terminated polydimethylsiloxane; and curing the mixture. The crosslinker functions as cages to block linear or branched linear macromolecules and prevents them from sliding into each other, thus increasing surface tension of the resulting LTI.
    Type: Grant
    Filed: May 6, 2008
    Date of Patent: October 5, 2010
    Assignee: International Business Machines Corporation
    Inventors: Randall J. Bertrand, Mark S. Chace, David L. Gardell, George J. Lawson, Yvonne Morris, Charles L. Reynolds, Jiali Wu
  • LIQUID THERMAL INTERFACE HAVING MIXTURE OF LINEARLY STRUCTURED POLYMER DOPED CROSSLINKED NETWORKS AND RELATED METHOD
    Publication number: 20090281254
    Abstract: A liquid thermal interface (LTI) including a mixture of a linearly structured polymer doped with crosslinked networks and related method are presented. The LTI exhibits reduced liquid polymer macromolecule mobility, and thus increased surface tension. An embodiment of the method includes mixing a crosslinker with a linearly structured polymer to form a mixture, wherein the crosslinker includes a base agent including a vinyl-terminated or branched polydimethylsiloxane, and a curing agent including a hydrogen-terminated polydimethylsiloxane; and curing the mixture. The crosslinker functions as cages to block linear or branched linear macromolecules and prevents them from sliding into each other, thus increasing surface tension of the resulting LTI.
    Type: Application
    Filed: May 6, 2008
    Publication date: November 12, 2009
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Randall J. Bertrand, Mark S. Chace, David L. Gardell, George J. Lawson, Yvonne Morris, Charles L. Reynolds, Jiali Wu