Patents by Inventor William David Cate

William David Cate 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).

  • Manufacture of carbon/carbon composites by hot pressing
    Patent number: 6699427
    Abstract: A mixture of carbon-containing fibers, such as mesophase or isotropic pitch fibers, and a suitable matrix material, such as a milled pitch, is compressed while resistively heating the mixture to form a carbonized composite material having a density of about 1.5 g/cm3, or higher. The composite material is formed in under ten minutes. This is a significantly shorter time than for conventional processes, which typically take several days and achieve a lower density material. Consequently, carbon/carbon composite materials having final densities of about 1.6-1.8 g/cm3, or higher are readily achieved with one or two infiltration cycles using a pitch or other carbonaceous material to fill voids in the composite and rebaking.
    Type: Grant
    Filed: July 26, 2002
    Date of Patent: March 2, 2004
    Assignee: UCAR Carbon Company Inc.
    Inventors: Dai Huang, Irwin C. Lewis, William David Cate, Richard T. Lewis
  • MANUFACTURE OF CARBON/CARBON COMPOSITES BY HOT PRESSING
    Publication number: 20040017019
    Abstract: A mixture of carbon-containing fibers, such as mesophase or isotropic pitch fibers, and a suitable matrix material, such as a milled pitch, is compressed while resistively heating the mixture to form a carbonized composite material having a density of about 1.5 g/cm3, or higher. The composite material is formed in under ten minutes. This is a significantly shorter time than for conventional processes, which typically take several days and achieve a lower density material. Consequently, carbon/carbon composite materials having final densities of about 1.6-1.8 g/cm3, or higher are readily achieved with one or two infiltration cycles using a pitch or other carbonaceous material to fill voids in the composite and rebaking.
    Type: Application
    Filed: July 26, 2002
    Publication date: January 29, 2004
    Applicant: UCAR Carbon Company Inc.
    Inventors: Dai Huang, Irwin C. Lewis, William David Cate, Richard T. Lewis