Patents by Inventor Donald H. Powers, Jr.

Donald H. Powers, Jr. 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).

  • Electrically conductive flame retardant materials and methods of manufacture
    Patent number: 5674606
    Abstract: Electrically conductive, flame retardant material and method of making same as well as method of use in an electromagnetic interference shielding material. The electrically conductive, flame retardant material comprises alumina trihydrate material treated to form an aluminum phosphate surface and an electrically conductive layer disposed thereover. In the form of particles, the electrically conductive, flame retardant material may be dispersed throughout a polymeric material to provide a flame retardant EMI shielding material. Such materials may be used as, for example, gaskets, caulking compounds, coatings and adhesives.
    Type: Grant
    Filed: April 6, 1995
    Date of Patent: October 7, 1997
    Assignee: Parker-Hannifin Corporation
    Inventor: Donald H. Powers, Jr.
  • Electromagnetic shielding
    Patent number: 4769280
    Abstract: Electromagnetic energy shielding material in forms such as form stable gaskets, caulking compounds, coatings, adhesives, etc., the material being composed of a plastic binder and electrically conductive particles having an aluminum core, a first metallic layer thereover e.g., of tin and a silver outer layer.
    Type: Grant
    Filed: January 3, 1985
    Date of Patent: September 6, 1988
    Assignee: Chomerics, Inc.
    Inventor: Donald H. Powers, Jr.
  • Electromagnetic shielding
    Patent number: 4507359
    Abstract: Electromagnetic energy shielding material in forms such as form stable gaskets, caulking compounds, coatings, adhesives, etc., the material being composed of a plastic binder and electrically conductive particles having an aluminum core, a first metallic layer thereover e.g., of tin and a silver outer layer.
    Type: Grant
    Filed: November 7, 1983
    Date of Patent: March 26, 1985
    Assignee: Chomerics, Inc.
    Inventor: Donald H. Powers, Jr.
  • Electromagnetic shielding
    Patent number: 4434541
    Abstract: Electromagnetic energy shielding material in forms such as form stable gaskets, caulking compounds, coatings, adhesives, etc., the material being composed of a plastic binder and electrically conductive particles having an aluminum core, a first metallic layer thereover e.g., of tin and a silver outer layer.
    Type: Grant
    Filed: December 22, 1980
    Date of Patent: March 6, 1984
    Assignee: Chomerics, Inc.
    Inventor: Donald H. Powers, Jr.