Patents Represented by Attorney Eugene O. Palazzo
  • Patent number: 6825513
    Abstract: A high power MOSFET semiconductor having a high breakdown voltage. The new power device concept that reaches an area of a lower specific on-resistance, higher breakdown voltage and reduced device silicon area. This device architecture is built on the concepts of charge compensation in the drift region of the device. Where, the doping of the vertical drift region is increased by one order of magnitude. To counterbalance the added charges, fine-structured wells of opposite doping type to the drift region are introduced as part of the device structure. The charge compensation wells do not contribute to the on-state current conduction, therefore, this novel new generation of high voltage device architecture breaks the limit line of silicon. This architecture may extend to higher material resistivity and larger geometry to increase the voltage to 1kv plus.
    Type: Grant
    Filed: September 27, 2002
    Date of Patent: November 30, 2004
    Assignee: Xerox Corporation
    Inventor: Abdul M. ElHatem
  • Patent number: 6821643
    Abstract: An electroluminescent device comprised of an anode and a cathode, and situated therebetween said anode and said cathode at least one electron transport layer comprised of a triazine of the formula wherein A is a monovalent or a multi-valent aromatic group which contains at least two conjugate-linked or at least two fused aromatic rings; Ar1 and Ar2 are each independently aryl or aliphatic; and m represents the number of repeating segments.
    Type: Grant
    Filed: January 21, 2000
    Date of Patent: November 23, 2004
    Assignee: Xerox Corporation
    Inventors: Nan-Xing Hu, Mohammad Esteghamatian, Zoran D. Popovic, Beng S. Ong, Ah-Mee Hor
  • Patent number: 6818723
    Abstract: A sulfonated polyester-siloxane resin derived, for example, from at least one organic diol monomer, at least one organic diacid monomer or at least diester monomer, at least one carbinol or carboxy terminated polydimethylsiloxane, and at least one ion salt of a sulfonated difunctional monomer.
    Type: Grant
    Filed: June 12, 2002
    Date of Patent: November 16, 2004
    Assignee: Xerox Corporation
    Inventor: Guerino G. Sacripante
  • Patent number: 6815136
    Abstract: A process including: dispersing a first liquid developer concentrate comprising a resin, a colorant, and a liquid developer reconstitution compound, in a carrier liquid, into additional carrier liquid to form a second liquid developer; depositing the second liquid developer onto a liquid receiver member to form a developer cake; developing an image with the developer cake; reclaiming undeveloped developer cake from the cake bearing liquid receiver member; and redispersing the reclaimed undeveloped developer cake in the second developer liquid.
    Type: Grant
    Filed: February 28, 2000
    Date of Patent: November 9, 2004
    Assignee: Xerox Corporation
    Inventors: Weizhong Zhao, Thomas W. Smith, David H. Pan, William M. Prest, Jr., Samuel Kaplan
  • Patent number: 6811896
    Abstract: An organic light emitting device (OLED) has a thick (100 to 250 nanometers) porphyrin buffer layer between the anode and the luminescent region. The thick porphyrin buffer layer in the OLED results in a small increase in device operating voltage, reduces the possibility of OLED shorting and can improve color purity in blue emitting OLEDs due to its significant optical absorption in the red range.
    Type: Grant
    Filed: July 29, 2002
    Date of Patent: November 2, 2004
    Assignee: Xerox Corporation
    Inventors: Hany Aziz, Zoran D. Popovic, Nan-Xing Hu, Ah-Mee Hor
  • Patent number: 6800411
    Abstract: A photoconductive imaging member comprised of a substrate, a photogenerating layer, and a charge transport layer containing a binder and a compound containing at least two (methyl)acrylates.
    Type: Grant
    Filed: February 19, 2003
    Date of Patent: October 5, 2004
    Assignee: Xerox Corporation
    Inventors: Yuhua Tong, Jin Wu, Liang-Bih Lin, John F. Yanus
  • Patent number: 6797445
    Abstract: A flexible electrophotographic imaging member comprising a supporting substrate, at least one imaging layer on one side of the supporting substrate, a charge blocking layer, an optional adhesive layer, a charge-generating layer, a charge transporting layer, a seam overcoat layer comprising a coating solution of a co-polyester resin and having a thickness of from about 2 to about 4 micrometers and having a width of from about 2 to about 10 millimeters and wherein said co-polyester resin is present in an amount of from about 2 to about 40 percent by weight based on the total weight of said overcoat layer, and a binder. The imaging member exhibits an excellent life cycle; excellent wear resistance, excellent electrical performance, and outstanding print quality.
    Type: Grant
    Filed: December 16, 2002
    Date of Patent: September 28, 2004
    Assignee: Xerox Corporation
    Inventors: David J. Maty, John A. Bergfjord, Sr., Stephan V. Drappel
  • Patent number: 6770410
    Abstract: An imaging member including, for example, a substrate, a charge blocking layer, an optional adhesive layer, a charge generating layer, a charge transporting layer comprising a charge transport component and a polymer binder substantially free of low molecular weight fractions.
    Type: Grant
    Filed: October 31, 2002
    Date of Patent: August 3, 2004
    Assignee: Xerox Corporation
    Inventors: Robert C. U. Yu, Timothy J. Fuller, Kathleen M. Carmichael
  • Patent number: 6733946
    Abstract: A method for providing three dimensional optical memory storage for computers. The method comprises subjecting a nanocomposite to irradiation. The nanocomposite comprises a matrix of particles of a liquid core resin within an inner shell resin and an outer shell resin. The inner shell resin retains the liquid core resin while the outer shell resin forms a continuous phase of the matrix. The particles of core resin contain at least one photosensitive compound and are in an array in the matrix. The continuous phase is substantially free of photosensitive compound. The irradiation may be a single beam of irradiation selectively focused on individual particles in the array to effect photobleaching of individual particles or a two-photon irradiation of a wavelength to effect photobleaching.
    Type: Grant
    Filed: March 9, 2001
    Date of Patent: May 11, 2004
    Assignees: Xerox Corporation, University of Toronto
    Inventors: Eugenia Kumacheva, Olga Kalinina, Robert John Dwayne Miller, Bradley John Siwick, James Harry Sharp, Jaan Noolandi
  • Patent number: 6664018
    Abstract: A method of forming an aqueous dispersion of particles of zinc stearate includes the steps of forming a mixture of at least one surfactant and water, heating the mixture to a temperature of from about 40° C. to less than a melting temperature of zinc stearate, adding a metal-containing stearate to the mixture under agitation, adding to the mixture a solution of a zinc salt in water, whereby upon inclusion of both the metal-containing stearate and the zinc salt in the mixture, the zinc salt reacts with the metal-containing stearate to form the particles of zinc stearate, continuing the heating and agitation following completion of the latter of the adding of the solution of zinc salt or the adding of the metal-containing stearate to continue the reaction, and cooling to obtain the aqueous dispersion of particles of zinc stearate. The method forms a stable aqueous dispersion of nanometer sized zinc stearate particles particularly useful in coating toner particles.
    Type: Grant
    Filed: April 23, 2002
    Date of Patent: December 16, 2003
    Assignee: Xerox Corporation
    Inventors: Allan K. Chen, Tie Hwee Ng, Lu Jiang, Kimberly D. Nosella, Paul J. Gerroir, Michael Damato
  • Patent number: 6614175
    Abstract: An organic light emitting device which contains a mixed region of a hole transport, an electron transport, and an organic luminescent component. The mixed region can be situated between two electrodes, one of which includes a thermal protective layer. Further, the device contains a hole transport region situated between the mixed region and an anode electrode, and an electron transport layer situated between the mixed region and a cathode electrode.
    Type: Grant
    Filed: January 26, 2001
    Date of Patent: September 2, 2003
    Assignee: Xerox Corporation
    Inventors: Hany Aziz, Zoran D. Popovic, Nan-Xing Hu
  • Patent number: 6596450
    Abstract: A charge transport composition containing aromatic amines with crosslinkable silanes as represented by the formula wherein A represents a hole transporting aromatic tertiary amine moiety; L1 and L2 represents charge such as a divalent group; X represents oxygen or an imino group; Y represents an alkoxy group, or a halide atom; R is a hydrogen atom or an alkyl group; and n represents the number of repeating segments.
    Type: Grant
    Filed: September 10, 2001
    Date of Patent: July 22, 2003
    Assignee: Xerox Corporation
    Inventors: Nan-Xing Hu, Yu Qi, Ping Liu
  • Patent number: 6574034
    Abstract: A method for displaying an image with an electrophoretic display device that includes a multiplicity of individual reservoirs, each containing an electrophoretic display fluid, located between two conductive film substrates, at least one of which is transparent, includes appropriately applying an electric field and a magnetic force to a selected individual reservoir in a manner to cause either a first set of particles or a second set of particles of the display fluid to be displayed. The first set of particles exhibit a color different from and contrasting to a color of the second set of particles, and also preferably a different charging property.
    Type: Grant
    Filed: January 16, 2002
    Date of Patent: June 3, 2003
    Assignee: Xerox Corporation
    Inventors: Pinyen Lin, David H. Pan, Chieh-Min Cheng, Adam Bush
  • Patent number: 6566025
    Abstract: A toner composition includes toner particles formed of a resin and a colorant; and one or more external additives, at least one of the external additives including polymeric particles, applied to a surface of the toner particles. The polymeric particles include a polymer selected from polymethylmethacrylate, modified polymethylmethacrylate, halogenated polymethylmethacrylates, and mixtures thereof.
    Type: Grant
    Filed: January 16, 2002
    Date of Patent: May 20, 2003
    Assignee: Xerox Corporation
    Inventors: Mary L. McStravick, Mark James Hirsch, Thomas W. Pike, Ronald J. Koch
  • Patent number: 6542708
    Abstract: A method of replenishing developer, wherein the replenisher contains carrier particles coated with zinc stearate.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: April 1, 2003
    Assignee: Xerox Corporation
    Inventor: Thomas J. Budny
  • Patent number: 6529313
    Abstract: An electrophoretic display liquid composition for use in an electrophoretic display device that has a multiplicity of individual reservoirs, each containing the liquid, contains one or at least two sets of particles dispersed in a transparent and/or colored liquid system. The at least two sets of particles exhibit different, contrasting color and different charging properties from each other, while in the one particle system, the particles exhibit a different, contrasting color from the colored liquid. In all embodiments, at least one of the sets of particles are particles with adjustable morphology made from emulsion/aggregation process. The morphology of the particles is controlled to be from grape, cauliflower, raspberry, or potato up to substantially perfect spheres.
    Type: Grant
    Filed: January 16, 2002
    Date of Patent: March 4, 2003
    Assignee: Xerox Corporation
    Inventors: Pinyen Lin, David H. Pan, Chieh-Min Cheng, Adam Bush, James R. Combes, Pudupadi R. Sundararajan, Alison Way, Paul J. Gerroir, Naveen Chopra, Paul F. Smith, Rina Carlini
  • Patent number: 6503677
    Abstract: An emulsion aggregation toner particularly adapted for use in hybrid scavengeless development includes toner particles of polymer binder, colorant and a surface additive package containing at least one additive negatively chargeable to a carrier and at least one additive positively chargeable to the carrier. The toner is able to exhibit high stable triboelectric charging ability, and substantially eliminates charge through and slow admix in a developer employing the toner.
    Type: Grant
    Filed: July 10, 2001
    Date of Patent: January 7, 2003
    Assignee: Xerox Corporation
    Inventors: Edward J. Gutman, Bernard Grushkin, John G. Ruhland
  • Patent number: 6498567
    Abstract: A system and remote control device that controls an appliance, and obtains a desired function of the appliance, by invoking a remote procedure call in a remote server which will thereby actually control the appliance. The remote control device comprises a sensor; sensor responsive means for capturing information provided by the sensor, wherein the captured information at least contains parameters representative of the identification of the appliance, user-profile parameters, parameters representative of the address of the remote server, and a function name indicating the function to be performed by the appliance; marshalling means for encoding the captured information and for packaging the captured information into data in a remote procedure call format; and a transmitter for establishing a communication protocol with the remote server in order to transmit the packaged data to the remote server so that the remote server may execute the remote procedure call.
    Type: Grant
    Filed: December 20, 1999
    Date of Patent: December 24, 2002
    Assignee: Xerox Corporation
    Inventors: Gregory Grefenstette, Francois Pacull, Max Copperman
  • Patent number: 6465856
    Abstract: A microstructure that may be used as an electrical connection in a microfabricated electro-mechanical system (MEMS) apparatus. The microstructure may have one or more isolatable electrical connections for signal transmission. The microstructure allows a MEMS apparatus to shield signal transmissions from the effects of electromagnetic interference or conductive fluids.
    Type: Grant
    Filed: March 19, 2001
    Date of Patent: October 15, 2002
    Assignee: Xerox Corporation
    Inventors: Peter M. Gulvin, Jingkuang Chen
  • Patent number: 6456815
    Abstract: The present invention relates to improved methods of coating donor members with waterbome coatings, wherein a resin, a pigment, and water are combined in proportions effective to provide a donor member precursor composition; the donor member precursor composition is subjected to high pressure communition to provide a donor member conductive coating composition; and the donor member coating composition is coated onto a substrate. The present method advantageously provides a donor member coating which is substantially free of air pockets or defects. In preferred embodiments the resin is a phenolic resin, preferably a waterborne phenolic resin, such as a phenol-formaldehyde resole, and in other preferred embodiments the pigment is selected from the group consisting of carbon black, graphite, magnetite, nigrosine, and combinations thereof.
    Type: Grant
    Filed: November 28, 2000
    Date of Patent: September 24, 2002
    Assignee: Xerox Corporation
    Inventors: Peter G. Odell, Thomas Thomson, Jas Paul S. Dhillon, Yvonne J. M. Groot, Michael F. Zona, Richard D. Hunt