Patents by Inventor Raj Patel

Raj Patel 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: 7981973
    Abstract: The present disclosure relates to a process for latex preparation comprising a first heating of a latomer mixture comprising at least one free radical polymerizable monomer to low conversion and then adding at least one alkylene anhydride; a second heating of the latomer mixture to low conversion; a third heating of the latomer mixture to form polymeric particles; and combining at least one amine with the polymeric particles.
    Type: Grant
    Filed: April 29, 2008
    Date of Patent: July 19, 2011
    Assignee: Xerox Corporation
    Inventors: Barkev Keoshkerian, Raj Patel, Edward G. Zwartz, Cuong Vong
  • Patent number: 7799502
    Abstract: A process including mixing a sulfonated polyester resin, a colorant, and a coagulant; heating the resulting sulfonated polyester mixture; adding a polymetal halide and an anionic latex to form coated toner particles; and heating the coated toner particles is disclosed.
    Type: Grant
    Filed: March 31, 2005
    Date of Patent: September 21, 2010
    Assignee: Xerox Corporation
    Inventors: Raj Patel, Mike Hawkins, Paul Gerroir, Richard P. N. Veregin
  • Patent number: 7615327
    Abstract: The present disclosure relates to a process including a first heating of a latomer mixture including at least one free radical polymerizable monomer, and at least one alkylene anhydride; a second heating of the latomer mixture to form polymeric particles; and combining the polymeric particles with at least one amine.
    Type: Grant
    Filed: November 17, 2004
    Date of Patent: November 10, 2009
    Assignee: Xerox Corporation
    Inventors: Barkey Keoshkerian, Raj Patel, Ed Zwartz, Cuong Vong
  • Publication number: 20080232848
    Abstract: In accordance with the invention, there is a method of forming a toner. The method can include blending two or more colorants to form a sample toner and forming a sample color specimen including a printed image comprising the sample toner. The method can further include comparing spectral distribution curves of the sample color specimen with that of a target color specimen including a target color and repeating the disclosed steps until acquiring a desired spectral match between the sample toner and the target color.
    Type: Application
    Filed: March 14, 2007
    Publication date: September 25, 2008
    Inventors: James M. Proper, Scott Silence, Rick Veregin, Daryl Walter Vanbesien, Eric Strohm, Raj Patel, Maria McDougall
  • Publication number: 20080213687
    Abstract: The present disclosure relates to a toner process comprising providing a resin miniemulsion comprising polymeric particles comprising at least one free radical polymerizable monomer compound and at least one alkylene anhydride; blending the miniemulsion with at least one colorant, at least one amine, and optionally at least one wax; heating the resulting mixture below or about equal to the glass transition temperature (Tg) of the resin emulsion; and heating the resulting mixture above or about equal to the glass transition temperature (Tg) of the resin emulsion.
    Type: Application
    Filed: April 29, 2008
    Publication date: September 4, 2008
    Applicant: Xerox Corporation
    Inventors: Barkev Keoshkerian, Raj Patel, Ed Zwartz, Cuong Vong
  • Publication number: 20080199802
    Abstract: The present disclosure relates to a process for latex preparation comprising a first heating of a latomer mixture comprising at least one free radical polymerizable monomer to low conversion and then adding at least one alkylene anhydride; a second heating of the latomer mixture to low conversion; a third heating of the latomer mixture to form polymeric particles; and combining at least one amine with the polymeric particles.
    Type: Application
    Filed: April 29, 2008
    Publication date: August 21, 2008
    Applicant: Xerox Corporation
    Inventors: Barkev KEOSHKERIAN, Raj Patel, Ed Zwartz, Cuong Vong
  • Publication number: 20080113291
    Abstract: A polyester toner includes particles of a resin, a colorant, an optional wax, and a polyion coagulant, where the toner is prepared by an emulsion aggregation process.
    Type: Application
    Filed: January 16, 2008
    Publication date: May 15, 2008
    Applicant: XEROX CORPORATION
    Inventor: Raj PATEL
  • Publication number: 20080014525
    Abstract: A method of forming a xerographic image having at least one portion with a gloss different from a gloss of another portion of the xerographic image includes xerographically forming a toner image on a surface of a substrate and forming a finish over the toner image at the at least one portion, the finish being made of a differential gloss finish coating material that has a gloss different from that of the toner image. The differential gloss finish coating material is preferably an emulsion aggregation toner that is substantially free of pigments that adversely affect the transparency of the toner following fusing, the toner having gloss tunability through control of the amount of crosslinked portions included in the toner.
    Type: Application
    Filed: September 24, 2007
    Publication date: January 17, 2008
    Applicant: Xerox Corporation
    Inventors: David SANDERS, Raj PATEL, Michael HOPPER
  • Publication number: 20070254228
    Abstract: A toner composition includes toner particles including a polymeric resin, a colorant, a wax, and an optional coagulant, and a coagulant applied as a surface additive to a surface of the toner particles to alter a triboelectric charge of the toner particles.
    Type: Application
    Filed: April 26, 2006
    Publication date: November 1, 2007
    Applicant: Xerox Corporation
    Inventors: Valerie Farrugia, Raj Patel, Michael Hawkins
  • Publication number: 20070141496
    Abstract: A toner composition that includes a resin substantially free of cross linking, a cross linked resin, a polyester resin as a crystalline polyester resin, and a colorant.
    Type: Application
    Filed: December 20, 2005
    Publication date: June 21, 2007
    Applicant: Xerox Corporation
    Inventors: Daryl VANBESIEN, Raj Patel, Karen Moffat, Edward Zwartz, Cuong Vong
  • Publication number: 20070131580
    Abstract: Embodiments include a fractionated and/or distilled wax having from about 30 to about 64 carbon units, a degree of crystallinity as calculated by heat of melting and as measured by DSC of from about 55 to about 100, a Mw is from about 500 to about 800, and a polydispersity of from about 1 to about 1.05.
    Type: Application
    Filed: November 14, 2005
    Publication date: June 14, 2007
    Inventors: Raj Patel, David Sanders, T. Ng, Stephan Drappel, Sandra Gardner, Sonja Hadzidedic, Louis Isganitis, Timothy Lincoln, Kevin Marcell
  • Publication number: 20070111128
    Abstract: Embodiments include a chemical toner composition having a first resin including a styrene vinyl copolymer and having a Tg of from about 46 to about 56° C., b) a second resin including a styrene vinyl copolymer having a Tg of from about 55 to about 65° C., c) a distilled wax having a heat of crystallization and a heat of enthalpy, both from about 1.0 to about 4.0 J/g for every weight percent of the wax used in the chemical toner composition, and wherein the wax has a peak melting point of from about 70 to about 99° C., and d) a colorant, wherein the chemical toner has a gloss of from about 30 to about 80 GGU.
    Type: Application
    Filed: November 14, 2005
    Publication date: May 17, 2007
    Inventors: Raj Patel, David Sanders, Christine Anderson, Allan Chen, Daryl Vanbesien, Patricia Burns
  • Publication number: 20070111130
    Abstract: A toner composition includes a reactive resin substantially free of cross linking, a wax, and a colorant. The reactive resin can include reactive epoxy and carboxylic acid functional groups.
    Type: Application
    Filed: November 15, 2005
    Publication date: May 17, 2007
    Applicant: XEROX CORPORATION
    Inventors: Daryl Vanbesien, Edward Zwartz, Guerino Sacripante, Karen Moffat, Raj Patel
  • Patent number: D589303
    Type: Grant
    Filed: March 26, 2008
    Date of Patent: March 31, 2009
    Assignee: Handi-Foil Corporation
    Inventors: Norton Sarnoff, Raj Patel
  • Patent number: D622540
    Type: Grant
    Filed: June 11, 2010
    Date of Patent: August 31, 2010
    Assignee: Handi-Foil Corporation
    Inventors: Norton Sarnoff, Raj Patel
  • Patent number: D623008
    Type: Grant
    Filed: June 11, 2010
    Date of Patent: September 7, 2010
    Assignee: Handi-Foil Corporation
    Inventors: Norton Sarnoff, Raj Patel
  • Patent number: D628009
    Type: Grant
    Filed: May 25, 2010
    Date of Patent: November 30, 2010
    Assignee: Handi-Foil Corporation
    Inventors: Norton Sarnoff, Raj Patel
  • Patent number: D628434
    Type: Grant
    Filed: May 25, 2010
    Date of Patent: December 7, 2010
    Assignee: Handi-Foil Corporation
    Inventors: Norton Sarnoff, Raj Patel
  • Patent number: D633332
    Type: Grant
    Filed: October 27, 2010
    Date of Patent: March 1, 2011
    Assignee: Handi-Foil Corporation
    Inventors: Norton Sarnoff, Raj Patel
  • Patent number: D633333
    Type: Grant
    Filed: October 28, 2010
    Date of Patent: March 1, 2011
    Assignee: Handi-Foil Corporation
    Inventors: Norton Sarnoff, Raj Patel