Patents by Inventor Rashid MAHMOOD

Rashid MAHMOOD 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).

  • OPTIMIZED LATEX PARTICLE SIZE FOR IMPROVED HOT OFFSET TEMPERATURE FOR SUSTAINABLE TONERS
    Publication number: 20160216624
    Abstract: The disclosure provides sustainable toner particles of from about 180 nm to about 250 nm in a sustainable toner composition having a hot offset temperature of from about 190° C. to about 220° C.
    Type: Application
    Filed: April 4, 2016
    Publication date: July 28, 2016
    Inventors: Ke Zhou, Guerino G. Sacripante, Richard Philip Nelson Veregin, Edward Graham Zwartz, Abdisamed Sheik Qasim, Rashid Mahmood, Mark R. Elliott, Cuong Vong, Melanie Lynn Davis
  • Optimized latex particle size for improved hot offset temperature for sustainable toners
    Patent number: 9372422
    Abstract: The disclosure provides sustainable toner particles of from about 180 nm to about 250 nm in a sustainable toner composition having a hot offset temperature of from about 190° C. to about 220° C.
    Type: Grant
    Filed: January 22, 2014
    Date of Patent: June 21, 2016
    Assignee: XEROX CORPORATION
    Inventors: Ke Zhou, Guerino G. Sacripante, Richard Philip Nelson Veregin, Edward Graham Zwartz, Abdisamed Sheik Qasim, Rashid Mahmood, Mark R. Elliott, Cuong Vong, Melanie Lynn Davis
  • Simplified process for sustainable toner resin
    Patent number: 9329510
    Abstract: The disclosure describes a one reaction process for making a bio-based polyester resin. The resultant polyester resin retains thermal properties as compared to a similar resin but made using previous multi-step processes conducted in separate vessels.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: May 3, 2016
    Assignee: Xerox Corporation
    Inventors: Guerino G Sacripante, Ke Zhou, Edward G Zwartz, Michael S Hawkins, Veronique Laberge, Alan EJ Toth, Rashid Mahmood, Mark R Elliott, John Abate
  • Sustainable polyester resin of defined acid value
    Patent number: 9323167
    Abstract: The disclosure describes a process for making a polyester resin of defined acid value using a temperature-sensitive reaction and dipropylene glycol as a reagent.
    Type: Grant
    Filed: October 22, 2013
    Date of Patent: April 26, 2016
    Assignee: Xerox Corporation
    Inventors: Guerino G Sacripante, Ke Zhou, Mark R Elliott, Rashid Mahmood, John Abate
  • Steam injection process for preparing polyester latex and apparatus thereof
    Patent number: 9261801
    Abstract: The present embodiments disclose processes for preparing a polyester latex containing an amount of residual organic solvent which is less than 100 ppm by weight of the total weight of the polyester latex.
    Type: Grant
    Filed: April 4, 2014
    Date of Patent: February 16, 2016
    Assignee: XEROX CORPORATION
    Inventors: Yu Liu, Frank Ping-Hay Lee, Michael D'Amato, Yulin Wang, David Borbely, Harry Latchman, John Abate, Ivan Uschak, Rashid Mahmood, Ke Zhou, Marko Saban, Biritawit Asfaw
  • Process for preparing polyester emulsions
    Patent number: 9201321
    Abstract: A phase inversion emulsification process includes dissolving a polyester resin in a mixture comprising (1) an organic solvent, (2) a first portion of a total amount of neutralizing agent, and (3) a first portion of water, neutralizing the dissolved polyester resin with a second portion of neutralizing agent, the second portion of neutralizing agent including the remaining amount of the total amount neutralizing agent, forming an emulsion by adding a second portion of water after the neutralizing step, and removing a portion of the organic solvent from the emulsion to provide a latex.
    Type: Grant
    Filed: June 17, 2013
    Date of Patent: December 1, 2015
    Assignee: XEROX CORPORATION
    Inventors: Shigang Steven Qiu, Chieh-Min Cheng, Amy Grillo, Yulin Wang, Rashid Mahmood, David Kurceba
  • Toner processes
    Patent number: 9195155
    Abstract: A method for preparing toner particles is disclosed. In embodiments, a suitable method includes aggregating a mixture comprising at least one resin, an optional pigment and an optional wax to form aggregated particles, freezing aggregation of particles by adjusting the pH of the aggregated particles to a freezing aggregation pH; coalescing the aggregated particles to form toner particles at a first pH that is higher than the freezing aggregation pH; and recovering the toner particles.
    Type: Grant
    Filed: October 7, 2013
    Date of Patent: November 24, 2015
    Assignee: XEROX CORPORATION
    Inventors: Ke Zhou, Guerino G. Sacripante, Yulin Wang, Abdisamed Sheik-Qasim, Rashid Mahmood, Rosa Duque
  • STEAM INJECTION PROCESS FOR PREPARING POLYESTER LATEX AND APPARATUS THEREOF
    Publication number: 20150286155
    Abstract: The present embodiments disclose processes for preparing a polyester latex containing an amount of residual organic solvent which is less than 100 ppm by weight of the total weight of the polyester latex.
    Type: Application
    Filed: April 4, 2014
    Publication date: October 8, 2015
    Applicant: XEROX CORPORATION
    Inventors: Yu Liu, Frank Ping-Hay Lee, Michael D'Amato, Yulin Wang, David Borbely, Harry Latchman, John Abate, Ivan Uschak, Rashid Mahmood, Ke Zhou, Marko Saban, Biritawit Asfaw
  • OPTIMIZED LATEX PARTICLE SIZE FOR IMPROVED HOT OFFSET TEMPERATURE FOR SUSTAINABLE TONERS
    Publication number: 20150205219
    Abstract: The disclosure provides sustainable toner particles of from about 180 nm to about 250 nm in a sustainable toner composition having a hot offset temperature of from about 190° C. to about 220° C.
    Type: Application
    Filed: January 22, 2014
    Publication date: July 23, 2015
    Applicant: Xerox Corporation
    Inventors: Ke Zhou, Guerino G. Sacripante, Richard Philip Nelson Veregin, Edward Graham Zwartz, Abdisamed Sheik Qasim, Rashid Mahmood, Mark R. Elliott, Cuong Vong, Melanie Lynn Davis
  • Sustainable Polyester Resin of Defined Acid Value
    Publication number: 20150111147
    Abstract: The disclosure describes a process for making a polyester resin of defined acid value using a temperature-sensitive reaction and dipropylene glycol as a reagent.
    Type: Application
    Filed: October 22, 2013
    Publication date: April 23, 2015
    Applicant: Xerox Corporation
    Inventors: Guerino G. Sacripante, Ke Zhou, Mark R. Elliott, Rashid Mahmood, John Abate
  • TONER PROCESSES
    Publication number: 20150099226
    Abstract: A method for preparing toner particles is disclosed. In embodiments, a suitable method includes aggregating a mixture comprising at least one resin, an optional pigment and an optional wax to form aggregated particles, freezing aggregation of particles by adjusting the pH of the aggregated particles to a freezing aggregation pH; coalescing the aggregated particles to form toner particles at a first pH that is higher than the freezing aggregation pH; and recovering the toner particles.
    Type: Application
    Filed: October 7, 2013
    Publication date: April 9, 2015
    Applicant: XEROX CORPORATION
    Inventors: Ke Zhou, Guerino G. Sacripante, Yulin Wang, Abdisamed Sheik-Qasim, Rashid Mahmood, Rosa Duque
  • Simplified Process for Sustainable Toner Resin
    Publication number: 20150056550
    Abstract: The disclosure describes a one reaction process for making a bio-based polyester resin. The resultant polyester resin retains thermal properties as compared to a similar resin but made using previous multi-step processes conducted in separate vessels.
    Type: Application
    Filed: August 22, 2013
    Publication date: February 26, 2015
    Applicant: Xerox Corporation
    Inventors: Guerino G. Sacripante, Ke Zhou, Edward G. Zwartz, Michael S. Hawkins, Veronique Laberge, Alan EJ Toth, Rashid Mahmood, Mark R. Elliott, John Abate
  • IMPROVED PROCESS FOR PREPARING POLYESTER EMULSIONS
    Publication number: 20140370438
    Abstract: A phase inversion emulsification process includes dissolving a polyester resin in a mixture comprising (1) an organic solvent, (2) a first portion of a total amount of neutralizing agent, and (3) a first portion of water, neutralizing the dissolved polyester resin with a second portion of neutralizing agent, the second portion of neutralizing agent including the remaining amount of the total amount neutralizing agent, forming an emulsion by adding a second portion of water after the neutralizing step, and removing a portion of the organic solvent from the emulsion to provide a latex.
    Type: Application
    Filed: June 17, 2013
    Publication date: December 18, 2014
    Inventors: Shigang Steven Qiu, Chieh-Min Cheng, Amy Grillo, Yulin Wang, Rashid Mahmood, David Kurceba
  • Efficient solvent-based phase inversion emulsification process with defoamer
    Patent number: 8741534
    Abstract: A process and system for making a resin emulsion suitable for use in forming toner particles including a silicone free anti-foam agent to control foam during formation of a polyester dispersion.
    Type: Grant
    Filed: June 8, 2009
    Date of Patent: June 3, 2014
    Assignee: Xerox Corporation
    Inventors: Zhaoyang Ou, Robert D. Bayley, Zhen Lai, Rashid Mahmood, David R. Kurceba, John Abate, Shigang Qiu, Chieh-Min Cheng
  • EFFICIENT SOLVENT-BASED PHASE INVERSION EMULSIFICATION PROCESS WITH DEFOAMER
    Publication number: 20100310979
    Abstract: A process and system for making a resin emulsion suitable for use in forming toner particles including a silicone free anti-foam agent to control foam during formation of a polyester dispersion.
    Type: Application
    Filed: June 8, 2009
    Publication date: December 9, 2010
    Applicant: Xerox Corporation
    Inventors: Zhaoyang OU, Robert D. BAYLEY, Zhen LAI, Rashid MAHMOOD, David R. KURCEBA, John ABATE, Shigang QIU, Chieh-Min CHENG