Patents by Inventor YoungDe Li

YoungDe Li 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).

  • Thermal interface material and method for making same
    Patent number: 6924335
    Abstract: A thermal interface material (40) includes a polymer matrix (32) and an array of carbon nanotubes (22) incorporated in the polymer matrix. The polymer matrix has a thermally conductive first face (42) and an opposite thermally conductive second face (44). The carbon nanotubes are substantially parallel to each other, and extend between the first and the second faces. A preferred method for making the thermal interface material includes the steps of: (a) forming the array of carbon nanotubes on a substrate (11); (b) immersing the carbon nanotubes in a liquid prepolymer (31) such that the liquid prepolymer infuses into the array of carbon nanotubes; (c) polymerizing the liquid prepolymer to obtain the polymer matrix having the carbon nanotubes secured therein; and (d) peeling the polymer matrix having the carbon nanotubes off from the substrate to obtain the thermal interface material.
    Type: Grant
    Filed: March 31, 2003
    Date of Patent: August 2, 2005
    Assignees: Hon Hai Precision Ind. Co., Ltd., Tsinghua University
    Inventors: Shoushan Fan, Pao Lo Liu, Hua Huang, YoungDe Li
  • Thermal interface material and method for making same
    Publication number: 20040097635
    Abstract: A thermal interface material (40) includes a polymer matrix (32) and an array of carbon nanotubes (22) incorporated in the polymer matrix. The polymer matrix has a thermally conductive first face (42) and an opposite thermally conductive second face (44). The carbon nanotubes are substantially parallel to each other, and extend between the first and the second faces. A preferred method for making the thermal interface material includes the steps of: (a) forming the array of carbon nanotubes on a substrate (11); (b) immersing the carbon nanotubes in a liquid prepolymer (31) such that the liquid prepolymer infuses into the array of carbon nanotubes; (c) polymerizing the liquid prepolymer to obtain the polymer matrix having the carbon nanotubes secured therein; and (d) peeling the polymer matrix having the carbon nanotubes off from the substrate to obtain the thermal interface material.
    Type: Application
    Filed: March 31, 2003
    Publication date: May 20, 2004
    Inventors: Shoushan Fan, Pao Lo Liu, Hua Huang, YoungDe Li