Patents by Inventor Frank Y. Pan

Frank Y. Pan 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: 4439507
    Abstract: This invention is directed to an improved photoresponsive device comprised in the order stated of (1) an optional supporting substrate, (2) a conductive layer, (3) a photogenerating layer comprised of an inorganic photoconductive composition, or an organic photoconductive composition, dispersed in a resinous binder material comprised of a poly(hydroxyether) material selected from the group consisting of those of the following formulas: ##STR1## wherein X and Y are independently selected from the group consisting of aliphatic groups and aromatic groups, Z is hydrogen, an aliphatic group or an aromatic group, and n is a number of from about 50 to about 200, and (4) in contact with the photogenerating layer a charge transport layer comprised of an electrically active composition dispersed in an insulating organic resinous binder, which composition is of the following formula: ##STR2## wherein X is selected from the group consisting of ortho (CH.sub.3), meta (CH.sub.3), para (CH.sub.
    Type: Grant
    Filed: September 21, 1982
    Date of Patent: March 27, 1984
    Assignee: Xerox Corporation
    Inventors: Frank Y. Pan, Ian D. Morrison, Leon A. Teuscher