Patents by Inventor Victor Berko-Boateng

Victor Berko-Boateng 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: 7622235
    Abstract: Coated carrier particles are provided for use in developer compositions for electrophotographic imaging. The coated carrier particles include a carrier core and a resin coating that includes first and second polymer components. The coated carrier particles exhibit stable triboelectric charging during aging, decreased coating hardness, higher coating coverage, and an improved resilience to toner impaction.
    Type: Grant
    Filed: August 29, 2008
    Date of Patent: November 24, 2009
    Assignee: Xerox Corporation
    Inventors: Deepak R. Maniar, Thomas C. Dombroski, Victor Berko-Boateng, Christopher M. Pattison, Angela Schnuerch
  • Publication number: 20090004592
    Abstract: Coated carrier particles are provided for use in developer compositions for electrophotographic imaging. The coated carrier particles include a carrier core and a resin coating that includes first and second polymer components. The coated carrier particles exhibit stable triboelectric charging during aging, decreased coating hardness, higher coating coverage, and an improved resilience to toner impaction.
    Type: Application
    Filed: August 29, 2008
    Publication date: January 1, 2009
    Applicant: XEROX CORPORATION
    Inventors: Deepak R. MANIAR, Thomas C. Dombroski, Victor Berko-Boateng, Christopher M. Pattison, Angela Schnuerch
  • Patent number: 7435522
    Abstract: Coated carrier particles are provided for use in developer compositions for electrophotographic imaging. The coated carrier particles include a carrier core and a resin coating that includes first and second polymer components. The coated carrier particles exhibit stable triboelectric charging during aging, decreased coating hardness, higher coating coverage, and an improved resilience to toner impaction.
    Type: Grant
    Filed: March 31, 2005
    Date of Patent: October 14, 2008
    Assignee: Xerox Corporation
    Inventors: Deepak R. Maniar, Thomas C. Dombroski, Victor Berko-Boateng, Christopher M. Pattison, Angela Schnuerch
  • Patent number: 7354689
    Abstract: A waste toner reclamation process includes collecting waste toner, screening the collected waste toner, meltmixing the screened waste toner with a second toner, and extruding, grinding and classifying the mixed toner product, wherein the collected waste toner comprises a mixture of different colored toner particles.
    Type: Grant
    Filed: March 23, 2005
    Date of Patent: April 8, 2008
    Assignee: Xerox Corporation
    Inventors: Victor Berko-Boateng, Hui Chang, John R. Laing
  • Publication number: 20060222994
    Abstract: Coated carrier particles are provided for use in developer compositions for electrophotographic imaging. The coated carrier particles include a carrier core and a resin coating that includes first and second polymer components. The coated carrier particles exhibit stable triboelectric charging during aging, decreased coating hardness, higher coating coverage, and an improved resilience to toner impaction.
    Type: Application
    Filed: March 31, 2005
    Publication date: October 5, 2006
    Applicant: XEROX CORPORATION
    Inventors: Deepak Maniar, Thomas Dombroski, Victor Berko-Boateng, Christopher Pattison, Angela Schnuerch
  • Publication number: 20060216632
    Abstract: A waste toner reclamation process includes collecting waste toner, screening the collected waste toner, meltmixing the screened waste toner with a second toner, and extruding, grinding and classifying the mixed toner product, wherein the collected waste toner comprises a mixture of different colored toner particles.
    Type: Application
    Filed: March 23, 2005
    Publication date: September 28, 2006
    Applicant: Xerox Corporation
    Inventors: Victor Berko-Boateng, Hui Chang, John Laing
  • Patent number: 5753307
    Abstract: Fluoroelastomer surfaces and a method for providing a fluoroelastomer surface on a supporting substrate which includes dissolving a fluoroelastomer; adding a dehydrofluorinating agent; adding an amino silane to form a resulting homogeneous fluoroelastomer solution; and subsequently providing at least one layer of the homogeneous fluoroelastomer solution to the supporting substrate.
    Type: Grant
    Filed: March 28, 1996
    Date of Patent: May 19, 1998
    Assignee: Xerox Corporation
    Inventors: Santokh S. Badesha, David H. Pan, George J. Heeks, Arnold W. Henry, Victor Berko-Boateng, Louis D. Fratangelo, Robert M. Ferguson
  • Patent number: 5539506
    Abstract: An apparatus for removing the edge raggedness and background toner level of, for example, tri-level images by reestablishing the images and cleaning fields of the first developed image with a closely spaced electrode. The toner is redistributed by electrical and/or mechanical forces which leads to the removal of edge raggedness and background toner before transfer of the tri-level images to a copy sheet.
    Type: Grant
    Filed: October 31, 1994
    Date of Patent: July 23, 1996
    Assignee: Xerox Corporation
    Inventors: Lloyd F. Bean, Victor Berko-Boateng
  • Patent number: 5532092
    Abstract: A method and apparatus for removing the edge raggedness and background toner level of, for example, tri-level images by reestablishing the images and cleaning fields of the first developed image with a closely spaced electrode. The toner is redistributed by electrical and/or mechanical forces which leads to the removal of edge raggedness and background toner.
    Type: Grant
    Filed: April 24, 1995
    Date of Patent: July 2, 1996
    Assignee: Xerox Corporation
    Inventors: Lloyd F. Bean, Victor Berko-Boateng
  • Patent number: 5370931
    Abstract: A fuser member comprised of a supporting substrate comprising an outer layer of a volume grafted elastomer, which is a substantially uniform integral interpenetrating network of a hybrid composition of a fluoroelastomer and a polyorganosiloxane, said volume graft having been formed by dehydrofluorination of said fluoroelastomer by a nucleophilic dehydrofluorinating agent, followed by addition polymerization by the addition of an alkene or alkyne functionally terminated polyorganosiloxane and a polymerization initiator; and wherein said outer layer contains a reactive metal oxide in an amount of from about 2 to about 7 weight percent.
    Type: Grant
    Filed: May 27, 1993
    Date of Patent: December 6, 1994
    Assignee: Xerox Corporation
    Inventors: Louis D. Fratangelo, Santokh S. Badesha, Arnold W. Henry, Robert M. Ferguson, David H. Pan, George J. Heeks, Victor Berko-Boateng, Lieng-Huang Lee
  • Patent number: 5309208
    Abstract: A toner cartridge for use with a copier having a toner hopper with a first interlocking seal including a second interlocking seal being specially adapted to mate with the first interlocking seal of the toner hopper, a hinged movable panel being disposed at the bottom portion of the toner cartridge, a movable panel, seal and a filament for manipulating the movable panel.
    Type: Grant
    Filed: December 1, 1992
    Date of Patent: May 3, 1994
    Assignee: Xerox Corporation
    Inventors: Lloyd F. Bean, Victor Berko-Boateng, Thomas R. Race