Patents Represented by Attorney, Agent or Law Firm E. D. Palallo
  • Polycarbonates
    Patent number: 6743888
    Abstract: A polycarbonate containing a repeating segment represented by Formula (I) wherein R1 is selected from the group consisting of hydrogen, alkyl, aryl; R2 represents a divalent linkage selected from the group consisting of alkylene containing one or more heteroatoms of halogen, nitrogen, oxygen, sulfur, silicon, and phosphorus, arylalkylene, and arylene; Ar1 and Ar2 each independently represent aromatic groups; and P represents a hydrogen atom, or a hydroxyl protective group.
    Type: Grant
    Filed: March 14, 2003
    Date of Patent: June 1, 2004
    Assignee: Xerox Corporation
    Inventors: Yu Qi, Nan-Xing Hu, H. Bruce Goodbrand
  • Toner compositions
    Patent number: 6124071
    Abstract: A toner comprised of polymer and titanium oxide dihydroxide of the formula --O--Ti(OH).sub.2 wherein Ti is titanium.
    Type: Grant
    Filed: March 1, 1999
    Date of Patent: September 26, 2000
    Assignee: Xerox Corporation
    Inventors: Pinyen Lin, Carol A. Fox, Roger N. Ciccarelli
  • Supercritical polymerization processes
    Patent number: 6057409
    Abstract: A process for the preparation of carrier powder polymer coatings which comprises the supercritical polymerization of two monomers and surfactant in a supercritical medium.
    Type: Grant
    Filed: April 3, 1995
    Date of Patent: May 2, 2000
    Assignee: Xerox Corporation
    Inventors: Michael F. Cunningham, Hadi K. Mahabadi
  • Coated carrier particles
    Patent number: 5656408
    Abstract: A carrier composition comprised of a core with a coating thereover comprised of a polyester, and which polyester comprises linear portions and crosslinked portions, and wherein said crosslinked portions are comprised of high density crosslinked microgel particles.
    Type: Grant
    Filed: April 29, 1996
    Date of Patent: August 12, 1997
    Assignee: Xerox Corporation
    Inventor: Scott M. Silence
  • Electrophotographic photoconductive imaging members with cis, trans perylene isomers
    Patent number: 4792508
    Abstract: An improved layered photoresponsive imaging member comprised of a supporting substrate; a photogenerator layer comprised of cis and trans naphthalene imidazole perylene component of the following formula; ##STR1## and an aryl amine hole transport layer dispersed in a resinous binder.
    Type: Grant
    Filed: June 29, 1987
    Date of Patent: December 20, 1988
    Assignee: Xerox Corporation
    Inventors: Peter M. Kazmaier, Richard A. Burt, Ah-Mee Hor, Cheng-Kuo Hsiao