Patents by Inventor H. Carl Ashcraft

H. Carl Ashcraft 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).

  • Patent number: 5885911
    Abstract: An EMI shielding member and method of making the member. The member includes a non-metallic substrate having an electrically non-conductive coating of a dielectric polymer matrix material loaded with an EMI shieldingly effective amount of electrically conductive fibers. The member can be formed by spraying the fiber loaded, dielectric polymer matrix onto a flexible fabric or tape.
    Type: Grant
    Filed: September 5, 1996
    Date of Patent: March 23, 1999
    Assignee: Martin Marietta Corporation
    Inventors: H. Carl Ashcraft, Walter B. May, Douglas R. Dowell
  • Patent number: 5721019
    Abstract: An EMI shielding member and method of making the member. The member includes a non-metallic substrate having an electrically non-conductive coating of a dielectric polymer matrix material loaded with an EMI shieldingly effective amount of electrically conductive fibers. The member can be formed by spraying the fiber loaded, dielectric polymer matrix onto a flexible fabric or tape.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: February 24, 1998
    Assignee: Martin Marietta Corporation
    Inventors: H. Carl Ashcraft, Walter B. May, Douglas R. Dowell