Patents by Inventor Robert J. Patti

Robert J. Patti 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 containing a titanyl fluorophthalocyanine pigment
    Patent number: 5238764
    Abstract: The invention provides an electrophotographic element comprising an electrically conductive substrate and a photoconductive layer, wherein the photoconductive layer has been formed from a coating solution of a polymeric binder and an organic solvent having a gamma.sub.c hydrogen bonding parameter value greater than 9.0, the coating solution having dispersed therein a titanyl fluorophthalocyanine pigment which has been acid-pasted or salt-milled to increase its photosensitivity and then has been brought into contact with an organic solvent having a gamma.sub.c hydrogen bonding parameter value less than 8.0 to preserve its increased photosensitivity, prior to the pigment's being dispersed in the coating solution.
    Type: Grant
    Filed: February 13, 1992
    Date of Patent: August 24, 1993
    Assignee: Eastman Kodak Company
    Inventors: Michel F. Molaire, Robert J. Patti
  • Coating compositions containing a titanyl fluorophthalocyanine pigment
    Patent number: 5238766
    Abstract: The invention provides a coating composition comprising a coating solution of a polymeric binder and an organic solvent having a gamma.sub.c hydrogen bonding parameter value greater than 9.0, the coating solution having dispersed therein a titanyl fluorophthalocyanine pigment which has been acid-pasted or salt-milled to increase its photosensitivity and then has been brought into contact with an organic solvent having a gamma.sub.c hydrogen bonding parameter value less than 8.0 to preserve its increased photosensitivity, prior to the pigment's being dispersed in the coating solution.
    Type: Grant
    Filed: February 13, 1992
    Date of Patent: August 24, 1993
    Assignee: Eastman Kodak Company
    Inventors: Michel F. Molaire, Robert J. Patti