Patents by Inventor Yuhua Tong

Yuhua Tong 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).

  • Sulfonamide-doped undercoat for imaging device
    Patent number: 8940105
    Abstract: A photoreceptor undercoat containing a sulfonamide facilitates removal of coatings from the substrate.
    Type: Grant
    Filed: May 16, 2012
    Date of Patent: January 27, 2015
    Assignee: Xerox Corporation
    Inventors: Yuhua Tong, Jin Wu, Nancy L. Belknap, Helen R. Cherniack
  • Endless flexible members for imaging devices
    Patent number: 8929785
    Abstract: Flexible members for use in imaging devices contain a non-ionic surfactant and a fluorinated surfactant.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: January 6, 2015
    Assignee: Xerox Corporation
    Inventors: Michael S Roetker, Francisco J Lopez, Kyle B Tallman, Jonathan H Herko, David W Martin, Yuhua Tong
  • Fuser member
    Patent number: 8906513
    Abstract: The present teachings provide a fuser member. The fuser member includes a substrate layer comprising a polyamideimide/polybenzimidazole polymer blend. A method of manufacturing the fuser member is described.
    Type: Grant
    Filed: December 13, 2010
    Date of Patent: December 9, 2014
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Dante M. Pietrantoni, Yuhua Tong, David W. Martin
  • UNDERCOAT LAYER AND IMAGING MEMBERS COMPRISING SAME
    Publication number: 20140323377
    Abstract: Disclosed are undercoat layers comprising a metal oxide, a polymer, and a citrate of Formula (I): wherein R1 is H, alkyl, or COR?; wherein R? is alkyl; and wherein R2, R3, and R4 are independently alkyl. The undercoat layers are useful in imaging members because they are easily separated from the substrate. This reduces the number of steps necessary to reclaim the substrate.
    Type: Application
    Filed: July 11, 2014
    Publication date: October 30, 2014
    Inventors: Yuhua Tong, Jin Wu, Robert P. Altavela, Edward F. Grabowski, Kent J. Evans, Adilson P. Ramos, Nancy L. Belknap, Helen R. Cherniack
  • INTERMEDIATE TRANSFER MEMBER AND METHOD OF MANUFACTURE
    Publication number: 20140248482
    Abstract: According to various embodiments, the present teachings provide an intermediate transfer member including a layer having a phosphorous containing polyamideimide having dispersed therein a conductive additive. A method of manufacturing the intermediate transfer member is provided.
    Type: Application
    Filed: March 1, 2013
    Publication date: September 4, 2014
    Applicant: XEROX CORPORATION
    Inventors: Yuhua Tong, Edward F. Grabowski, Jin Wu, Robert J. Meyer
  • Metallic nanoparticle reinforced polyimide for fuser belt with high thermal conductivity
    Patent number: 8824945
    Abstract: A fuser belt for an electrostatographic device and methods for making the fuser belt can include the use of a polyimide and a plurality of copper nanoparticles. The use of copper nanoparticles can result in a fuser belt having a lower heat capacity and a higher thermal conductivity than conventional fuser belts.
    Type: Grant
    Filed: February 9, 2011
    Date of Patent: September 2, 2014
    Assignee: Xerox Corporation
    Inventor: Yuhua Tong
  • Silane-containing polyamideimide intermediate transfer members
    Patent number: 8802766
    Abstract: An intermediate transfer member including a first supporting substrate layer, and a second layer of a silane-containing polyamideimide, and a filler component.
    Type: Grant
    Filed: December 10, 2010
    Date of Patent: August 12, 2014
    Assignee: Xerox Corporation
    Inventors: Yuhua Tong, Dante M. Pietrantoni, Jin Wu
  • Toner compositions
    Patent number: 8715897
    Abstract: The present disclosure provides polyesters suitable for use in forming toners. In embodiments, a polyester may be subjected to phase inversion emulsification, in which charge control agents are added so that the polyester emulsion includes charge control agents therein. The resulting polyester emulsion with charge control agents may then be utilized to form toner particles.
    Type: Grant
    Filed: November 16, 2009
    Date of Patent: May 6, 2014
    Assignee: Xerox Corporation
    Inventors: Robert D. Bayley, Yuhua Tong, Timothy L. Lincoln, Grazyna Kmiecik-Lawrynowicz, Maura A. Sweeney
  • Intermediate transfer member and composition
    Patent number: 8668976
    Abstract: There is described an intermediate transfer member comprising a seamless layer comprising a polyphenylsulfone and a polysiloxane having dispersed therein carbon black particles. The composition used to manufacture the seamless intermediate transfer member is also described.
    Type: Grant
    Filed: January 19, 2011
    Date of Patent: March 11, 2014
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Jonathan H. Herko, Francisco J. Lopez, Kyle B. Tallman, Dante M. Pietrantoni, David W. Martin, Yuhua Tong, Michael S. Roetker, Scott J. Griffin, Markus R. Silvestri
  • Processes for producing polyester latexes via solvent-free emulsification
    Patent number: 8618192
    Abstract: A process for making a latex emulsion suitable for use in a toner composition includes contacting at least one amorphous polyester resin with a viscosity reducing additive in the absence of an organic solvent to form a resin mixture either via an extruder or batch process, and adding a surfactant, neutralizing agent, and deionized water to the resin mixture.
    Type: Grant
    Filed: February 5, 2010
    Date of Patent: December 31, 2013
    Assignee: Xerox Corporation
    Inventors: Santiago Faucher, Joo T. Chung, Timothy L. Lincoln, Shigang Qiu, Yuhua Tong, Fumii Higuchi, Emine Irmak Serifoglu, Allan K. Chen, Brian J. Andaya, Joseph L. Leonardo
  • Intermediate transfer member
    Patent number: 8609233
    Abstract: Described herein is an intermediate transfer member that includes a layer of phenoxy resin having dispersed therein conductive particles.
    Type: Grant
    Filed: July 9, 2010
    Date of Patent: December 17, 2013
    Assignee: Xerox Corporation
    Inventors: Dante M. Pietrantoni, Yuhua Tong, Michael S. Roetker, Francisco J. Lopez, Kyle B. Tallman, Jonathan H. Herko, Jin Wu
  • Fluorinated poly(amide-imide) copolymer printhead coatings
    Patent number: 8602523
    Abstract: Disclosed is an ink jet printhead comprising a plurality of channels, wherein the channels are capable of being filled with ink from an ink supply and wherein the channels terminate in nozzles on one surface of the printhead, the surface being coated with a coating composition comprising a fluorinated poly(amide-imide) copolymer.
    Type: Grant
    Filed: November 11, 2011
    Date of Patent: December 10, 2013
    Assignee: Xerox Corporation
    Inventors: Edward F Grabowski, Yuhua Tong
  • Transparent intermediate transfer members containing zinc oxide, polyarylsulfone, and polyetheramine
    Patent number: 8577267
    Abstract: An intermediate transfer member including an optional supporting substrate, and in contact with the supporting substrate in the configuration of a layer a polyarylsulfone, a polyetheramine, and nano-size zinc oxide particles.
    Type: Grant
    Filed: November 16, 2010
    Date of Patent: November 5, 2013
    Assignee: Xerox Corporation
    Inventor: Yuhua Tong
  • Intermediate transfer member reconditioning
    Patent number: 8543031
    Abstract: There is disclosed a method for reconditioning an intermediate transfer member and the reconditioned intermediate transfer member. The method comprises stripping off an outer layer of the intermediate transfer member. A mixture of a polymer, conductive particles and a solvent is coated over the outer surface of a seamless intermediate transfer member. The mixture is heated to form a layer on the outer surface of the intermediate transfer belt. An apparatus for reconditioning an intermediate transfer member is also described.
    Type: Grant
    Filed: December 2, 2010
    Date of Patent: September 24, 2013
    Assignee: Xerox Corporation
    Inventors: Dante M. Pietrantoni, Yuhua Tong, Jin Wu, Frank Mezzatesta, Jeremy J. Bean, Heiko Rommelmann, Jonathan H. Herko
  • Endless flexible members for imaging devices
    Patent number: 8543043
    Abstract: Flexible members for use in imaging devices which may include a non-ionic surfactant; a fluorinated surfactant; or both.
    Type: Grant
    Filed: February 1, 2011
    Date of Patent: September 24, 2013
    Assignee: Xerox Corporation
    Inventors: Michael S. Roetker, Francisco J. Lopez, Kyle B. Tallman, Jonathan H. Herko, David W. Martin, Yuhua Tong
  • Fluoropolyimide intermediate transfer members
    Patent number: 8524371
    Abstract: An intermediate transfer media, such as a belt, that includes a first optional polyimide substrate layer, and a second layer of a fluoropolyimide polymer.
    Type: Grant
    Filed: November 26, 2012
    Date of Patent: September 3, 2013
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Yu Qi, Nan-Xing Hu, Yuhua Tong
  • Conductive carbon black
    Patent number: 8497016
    Abstract: Described herein is a method of forming a composition including mixing an anhydride, a silane and a solvent to form a solution. Carbon black and an isocyanate are mixed to form a carbon black mixture. The solution and the carbon black mixture are homogenized to form a carbon black dispersion.
    Type: Grant
    Filed: July 21, 2010
    Date of Patent: July 30, 2013
    Assignee: Xerox Corporation
    Inventors: Dante M. Pietrantoni, Yuhua Tong, Michael S. Roetker
  • Latex processes
    Patent number: 8492065
    Abstract: Processes for continuously forming latex emulsions useful in preparing toners are provided which do not require the use of solvents.
    Type: Grant
    Filed: March 27, 2008
    Date of Patent: July 23, 2013
    Assignee: Xerox Corporation
    Inventors: Joo T. Chung, Zhen Lai, Chieh-Min Cheng, Joseph L. Leonardo, Yuhua Tong, Timothy L. Lincoln, Samir Kumar, Christine Louise DeMay
  • Seamless intermediate transfer belt
    Patent number: 8494421
    Abstract: An intermediate transfer belt for an electrostatographic device and methods for making the intermediate transfer belt can include the use of polyamide-imide and carbon nanotubes and nanosheets, for example multi-walled carbon nanotubes, single-walled carbon nanotubes, graphene, graphite, and two or more of these as an electrically conductive filler.
    Type: Grant
    Filed: February 10, 2011
    Date of Patent: July 23, 2013
    Assignee: Xerox Corporation
    Inventors: Michael S Roetker, Francisco J Lopez, Kyle B Tallman, Jonathan H Herko, David W Martin, Yuhua Tong
  • Pentanediol ester containing photoconductors
    Patent number: 8481235
    Abstract: A photoconductor that includes, for example, a supporting substrate, an undercoat layer thereover that contains a metal oxide, a phenolic resin, and a pentanediol ester; a photogenerating layer; and at least one charge transport layer.
    Type: Grant
    Filed: August 26, 2010
    Date of Patent: July 9, 2013
    Assignee: Xerox Corporation
    Inventors: Yuhua Tong, Jin Wu, Nancy L. Belknap, Helen R. Cherniack, Marc J. Livecchi