Patents by Inventor Frederick D. Gonyea

Frederick D. Gonyea 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).

  • Patent number: 4780385
    Abstract: An electrophotographic imaging member is disclosed having an imaging surface adapted to accept a negative electrical charge, the electrophotographic imaging member comprising a metal ground plane layer comprising zirconium, a hole blocking layer, a charge generation layer comprising photoconductive particles dispersed in a film forming resin binder, and a hole transport layer, the hole transport layer being substantially non-absorbing in the spectral region at which the charge generation layer generates and injects photogenerated holes but being capable of supporting the injection of photogenerated holes from the charge generation layer and transporting the holes through the charge transport layer.
    Type: Grant
    Filed: April 21, 1987
    Date of Patent: October 25, 1988
    Assignee: Xerox Corporation
    Inventors: Francis J. Wieloch, Charles C. Robinson, Frederick D. Gonyea, Harvey S. Towers, Anthony M. Horgan, Edward F. Grabowski, Satish Parikh
  • Patent number: 4725518
    Abstract: A process for preparing an electrophotographic imaging member comprising providing a photogenerating layer on a supporting substrate and applying a charge transport layer forming mixture to the photogenerating layer, the charge transport layer forming mixture comprising a charge transporting aromatic amine compound of one or more compounds having the general formula: ##STR1## wherein R.sup.1 and R.sup.2 are an aromatic group selected from the group consisting of a substituted or unsubstituted phenyl group, naphthyl group, and polyphenyl group and R.sup.
    Type: Grant
    Filed: May 15, 1984
    Date of Patent: February 16, 1988
    Assignee: Xerox Corporation
    Inventors: Kathleen M. Carmichael, Frederick D. Gonyea, Edward F. Grabowski, Anthony M. Horgan, Jay W. Johns, Robert N. Jones, Anita P. Lynch, Susan Robinette, Donald P. Sullivan, Emery G. Tokoli