Patents by Inventor Roger O. Uhler

Roger O. Uhler 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).

  • Use of prolonged tack toners for the preparation of multilayer electric circuits
    Patent number: 4355055
    Abstract: Preparation of an electrically conductive pattern by adhering a prolonged tack toner which is activated by heating to the toner-receptive image areas of an inert substrate, the temperature is reduced and to the activated toner is applied a prolonged tack toner having conductive metal particles and glass frit as components; optionally the steps of heating, temperature reduction and toner application are repeated at least one time, and then the toned image is burned and fired. An electrically conductive pattern is obtained which is useful, for example, as an electric circuit. The process is also useful in the application of resistor and dielectric materials.
    Type: Grant
    Filed: July 30, 1981
    Date of Patent: October 19, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Grant A. Beske, Abraham B. Cohen, Roger O. Uhler
  • Use of prolonged tack toners for the preparation of electric circuits
    Patent number: 4303698
    Abstract: Preparation of an electrically conductive pattern by adhering a prolonged tack toner which is activated by heating to the toner-receptive image areas of an inert substrate, the temperature is reduced and to the activated toner is applied a prolonged tack toner having conductive metal particles and glass frit as components; optionally the steps of heating, temperature reduction and toner application are repeated at least one time, and then the toned image is burned and fired. An electrically conductive pattern is obtained which is useful, for example, as an electric circuit. The process is also useful in the application of resistor and dielectric materials.
    Type: Grant
    Filed: February 25, 1980
    Date of Patent: December 1, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Grant A. Beske, Abraham B. Cohen, Roger O. Uhler