Patents by Inventor Craig N. Johnston

Craig N. Johnston 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).

  • Heat sink
    Patent number: 6053240
    Abstract: A heat sink (60) comprising thermally conductive legs (72, 74) for coupling to a heat pad (64), a plurality of heat-convecting fins (86) that are thermally coupled to the legs, and a surface (80) cantilevered by support structure (82) coupled between the legs (72, 74). One or more heat-convecting fins (88, 90) may extend directly from the support structure (82). A method for making the heat sink is also disclosed.
    Type: Grant
    Filed: February 9, 1999
    Date of Patent: April 25, 2000
    Assignee: Aavid Thermal Technologies, Inc.
    Inventors: Craig N. Johnston, Daniel J. Haas
  • Epoxy composition of increased thermal conductivity and use thereof
    Patent number: 4960634
    Abstract: A composition of enhanced thermal conductivity which comprises a tetrabrominated diglycidyl ether polyepoxide; and epoxy polymer having an epoxy functionality of 3.5 to 6; zinc oxide and curing agents; and use thereof.
    Type: Grant
    Filed: March 14, 1990
    Date of Patent: October 2, 1990
    Assignee: International Business Machines Corporation
    Inventors: Christina M. Boyko, Craig N. Johnston, James R. Loomis, Carl E. Samuelson, Ricahrd A. Schumacher