Patents by Inventor James D. Mitchell

James D. Mitchell 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).

  • Copper conductor compositions containing copper oxide and Bi.sub.2 O.sub.3
    Patent number: 4172919
    Abstract: Compositions useful for making electrical conductor patterns on a nonconductive (dielectric) substrate, the compositions comprising certain proportions of finely divided copper, copper oxide and glass powders, dispersed in a vehicle. The compositions may be printed on a substrate and fired in a neutral atmosphere to produce conductor patterns adherent to the substrate.
    Type: Grant
    Filed: June 16, 1978
    Date of Patent: October 30, 1979
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: James D. Mitchell