Patents by Inventor David R. Cahill

David R. Cahill 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).

  • Dielectric recording media
    Patent number: 3991253
    Abstract: A dielectric recording medium comprising an electroconductive substrate and a coating of dielectric resin binder in which there is dispersed an organophilic clay pigment. The organophilic clay pigment comprises a kaolin clay treated with an organotitanium compound. The pigment imparts a bond appearance to the dielectric recording medium and enhances the tooth or ease of marking of the coating with ink.
    Type: Grant
    Filed: January 27, 1975
    Date of Patent: November 9, 1976
    Assignee: Monsanto Company
    Inventors: Albert H. Markhart, David R. Cahill
  • Process of manufacture of dielectric recording media
    Patent number: 3973055
    Abstract: The dielectric recording media comprise electroconductive substrates coated with dielectric resin binder. The process comprises dispersing an organophilic clay pigment in the dielectric resin binder and coating the electroconductive substrate with the dispersion. The organophilic clay pigment is obtained by treating calcined kaolin clay with an organotitanium compound.
    Type: Grant
    Filed: January 27, 1975
    Date of Patent: August 3, 1976
    Assignee: Monsanto Company
    Inventors: Albert H. Markhart, David R. Cahill
  • Dielectric coating compositions
    Patent number: 3951882
    Abstract: A dielectric coating composition comprising an organophilic clay pigment dispersed in a dielectric resin binder. The organophilic clay binder is prepared by treatment of a kaolin clay with an organotitanium compound. Preferred binders include styrene interpolymers and poly(vinyl butyrals).
    Type: Grant
    Filed: March 8, 1973
    Date of Patent: April 20, 1976
    Assignee: Monsanto Company
    Inventors: Albert H. Markhart, David R. Cahill