Patents by Inventor Rafik O. Loutfy

Rafik O. Loutfy 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: 4746756
    Abstract: Disclosed are fluorinated squaraine compounds of the following formula: ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are independently selected from the group consisting of alkyl, aryl, and heterocyclic substituents.
    Type: Grant
    Filed: August 21, 1986
    Date of Patent: May 24, 1988
    Assignee: Xerox Corporation
    Inventors: Peter M. Kazmaier, Giuseppa Baranyi, Rafik O. Loutfy
  • Patent number: 4711833
    Abstract: A process for the fabrication of seamless substrates which comprises (1) providing a substrate with a release coating composition thereover; (2) depositing thereon by electrostatic powder spraying a polymer; (3) melting the polymer blend; and (4) subsequently permitting the melted blend to cool. Thereafter, layered photoconductive imaging members can be prepared by the application, for example, of a ground plane, a photogenerating layer, and a charge transport layer.
    Type: Grant
    Filed: March 24, 1986
    Date of Patent: December 8, 1987
    Assignee: Xerox Corporation
    Inventors: T. Brian McAneney, Rafik O. Loutfy, Joseph Mammino, Deborah J. Nichol-Landry, Donald S. Sypula
  • Patent number: 4621038
    Abstract: Disclosed are fluorinated squaraine compounds of the following formula: ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are independently selected from the group consisting of alkyl, aryl, and heterocyclic substituents.
    Type: Grant
    Filed: June 24, 1985
    Date of Patent: November 4, 1986
    Assignee: Xerox Corporation
    Inventors: Peter M. Kazmaier, Giuseppa Baranyi, Rafik O. Loutfy
  • Patent number: 4618551
    Abstract: Disclosed is a polysilylene hole transporting compound for use in layered imaging members comprised of ##STR1## wherein R.sub.1,R.sub. 2, R.sub.3, R.sub.4, R.sub.5, and R.sub.6 are independently selected from the group consisting of alkyl, aryl, substituted alkyl, substituted aryl, and alkoxy; and n, m, and p are numbers that represent the percentage of the monomer unit in the total polymer compound.
    Type: Grant
    Filed: January 25, 1985
    Date of Patent: October 21, 1986
    Assignee: Xerox Corporation
    Inventors: Milan Stolka, Damodar M. Pai, Thomas W. Smith, James M. Duff, Rafik O. Loutfy
  • Patent number: 4587189
    Abstract: Disclosed is an improved layered photoresponsive imaging member comprised of a supporting substrate; a vacuum evaporated photogenerator layer comprised of a perylene pigment selected from the group consisting of a mixture of bisbenzimidazo(2,1-a-1',2'-b)anthra(2,1,9-def:6,5,10-d'e'f')diisoquinoline -6,11-dione, and bisbenzimidazo(2,1-a:2',1'-a)anthra(2,1,9-def:6,5,10-d'e'f')diisoquinoline -10,21-dione, and N,N'-diphenyl-3,4,9,10-perylenebis(dicarboximide); and an aryl amine hole transport layer comprised of molecules of the following formula: ##STR1## dispersed in a resinous binder and wherein X is selected from the group consisting of halogen and alkyl.
    Type: Grant
    Filed: May 24, 1985
    Date of Patent: May 6, 1986
    Assignee: Xerox Corporation
    Inventors: Ah-Mee Hor, Rafik O. Loutfy
  • Patent number: 4559287
    Abstract: An improved photoresponsive imaging member consisting essentially of a supporting substrate, a photogenerating layer, comprised of a photogenerating pigment optionally dispersed in an inactive resinous binder, an electron transporting layer comprised of derivatives of fluorenylidene methane dispersed in a resinous binder, and having incorporated therein a stabilizing amount of an aryl amine electron donating compound.
    Type: Grant
    Filed: November 13, 1984
    Date of Patent: December 17, 1985
    Assignee: Xerox Corporation
    Inventors: T. Brian McAneney, Rafik O. Loutfy, Beng S. Ong, Zoran D. Popovic
  • Patent number: 4555463
    Abstract: Disclosed are improved photoresponsive imaging members comprised of chloroindium phthalocyanine photogenerating compositions. More specifically, there is disclosed a photoresponsive imaging member comprised of a supporting substrate, an adhesive layer, a chloroindium phthalocyanine photogenerating pigment in contact with the adhesive layer, and a hole transport layer comprised of an aryl amine dispersed in an inactive resinous binder. There is also disclosed photoresponsive imaging members comprised of a first photogenerating layer, and a second photogenerating layer, which imaging members are sensitive to light in the region of from about 400 to about 900 nanometers.
    Type: Grant
    Filed: August 22, 1984
    Date of Patent: November 26, 1985
    Assignee: Xerox Corporation
    Inventors: Ah-Mee Hor, Rafik O. Loutfy
  • Patent number: 4514482
    Abstract: This invention relates to improved photoresponsive devices including, for example, those comprised of (1) a supporting substrate, and (2) a photoconductive layer comprised of perylene dye compositions of the following formula: ##STR1## wherein R.sub.1, R.sub.2, and R.sub.3 are independently selected from the group consisting of alkyl groups and aryl groups.
    Type: Grant
    Filed: March 8, 1984
    Date of Patent: April 30, 1985
    Assignee: Xerox Corporation
    Inventors: Rafik O. Loutfy, Cheng-Kuo Hsiao
  • Patent number: 4448646
    Abstract: This invention is directed to a process for preparing metallic elements of high purity which comprises providing the corresponding esters of the elements desired dissolved in an organic medium, and an organic salt, and subsequently subjecting the resulting solution to an electrochemical reduction in an electrolytic apparatus.
    Type: Grant
    Filed: June 30, 1983
    Date of Patent: May 15, 1984
    Assignee: Xerox Corporation
    Inventors: Santokh S. Badesha, Rafik O. Loutfy
  • Patent number: 4432841
    Abstract: This invention is generally directed to a process for preparing chalcogenide alloys of high purity which comprises providing the corresponding pure esters of the elements desired in an organic medium, and an organic salt followed by simultaneously coreducing the esters by an electrochemical reduction in an electrolytic apparatus. More specifically, in one embodiment, selenium arsenic, alloys of high purity are prepared by subjecting the corresponding pure esters to a simultaneous electrochemical reduction reaction in an electrochemical apparatus containing an anode, a cathode, an electrolytic solution comprised of the pure esters of selenium and arsenic, contained in a solution of an organic solvent, and an organic salt wherein the pure esters lose electrons resulting in the desired metallic alloys.
    Type: Grant
    Filed: June 30, 1983
    Date of Patent: February 21, 1984
    Assignee: Xerox Corporation
    Inventors: Santokh S. Badesha, Thomas W. Smith, Rafik O. Loutfy
  • Patent number: 4175982
    Abstract: A photovoltaic cell having an improved barrier electrode comprising indium or tin. The cell utilizes metal-free phthalocyanine dispersed in an electrically insulated binder as the photoactive layer in contact with an ohmic electrode.
    Type: Grant
    Filed: July 3, 1978
    Date of Patent: November 27, 1979
    Assignee: Xerox Corporation
    Inventors: Rafik O. Loutfy, Cheng-Kuo Hsiao, James H. Sharp
  • Patent number: 4175981
    Abstract: A photovoltaic cell wherein the photoactive layer comprises a thin layer of metal-free phthalocyanine dispersed in a binder. The electrical output is greatly in excess of that obtained from prior art organic semiconductor photovoltaic cells of the same surface area.
    Type: Grant
    Filed: July 3, 1978
    Date of Patent: November 27, 1979
    Assignee: Xerox Corporation
    Inventors: Rafik O. Loutfy, Lloyd F. McIntyre, James H. Sharp