Patents by Inventor J. Robin Cowdery-Corvan

J. Robin Cowdery-Corvan 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).

  • Electrophotographic elements and soluble cyclic sulfone electron transport agents
    Patent number: 5618950
    Abstract: A sulfone charge transport agent and a multilayered electrophotographic element in which at least one of said layers includes polymeric binder and the sulfone charge transport agent. The general structure of the charge transport agent is: ##STR1## R is alkyl or cycloalkyl having from 1 to about 10 carbons, or aryl or heteroaryl having a total of carbons and heteroatoms of from 6 to about 12. T is alkyl having from 1 to 4 carbons.
    Type: Grant
    Filed: September 27, 1995
    Date of Patent: April 8, 1997
    Assignee: Eastman Kodak Company
    Inventors: Michael R. Detty, John A. Sinicropi, J. Robin Cowdery-Corvan, Ralph H. Young
  • Electrophotographic elements containing soluble cyclic sulfone electron transport agents
    Patent number: 5500317
    Abstract: A sulfone charge transport agent and a multilayered electrophotographic element in which at least one of said layers includes polymeric binder and the sulfone charge transport agent. The general structure of the charge transport agent is: ##STR1## R is alkyl or cycloalkyl having from 1 to about 10 carbons, or aryl or heteroaryl having a total of carbons and heteroatoms of from 6 to about 12. T is alkyl having from 1 to 4 carbons.
    Type: Grant
    Filed: June 16, 1994
    Date of Patent: March 19, 1996
    Assignee: Eastman Kodak Company
    Inventors: Michael R. Detty, John A. Sinicropi, J. Robin Cowdery-Corvan, Ralph H. Young