Patents by Inventor Michael Steven Hawkins

Michael Steven Hawkins 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: 11639053
    Abstract: A process including providing a three-dimensional printing powder dispersion comprising a three-dimensional printing powder, an optional dispersing agent, and water; providing an emulsion of an organic polymeric additive; combining the three-dimensional printing powder dispersion and the emulsion of organic polymeric additive to form a mixture comprising the three-dimensional printing powder dispersion and the emulsion of organic polymeric additive; and drying the mixture of the three-dimensional printing powder dispersion and the emulsion of organic polymeric additive.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: May 2, 2023
    Assignee: Xerox Corporation
    Inventors: Richard P. N. Veregin, Karen A. Moffat, Michael Steven Hawkins, Shivanthi Easwari Sriskandha
  • Patent number: 11048184
    Abstract: A toner process including a) mixing reagents comprising at least one amorphous resin, an optional crystalline resin, an optional styrene, acrylate or styrene/acrylate, an optional wax, and an optional colorant to form an emulsion comprising a resin particle; b) adding at least one aggregating agent and aggregating said resin particle to form a nascent toner particle; c) optionally, adding one or more resins to form a shell on said nascent toner particle to yield a core-shell particle; d) adding a first chelating agent and a second chelating agent; wherein said first chelating agent and said second chelating agent are different; e) freezing particle growth to form an aggregated toner particle; f) coalescing said aggregated toner particle to form a toner particle; and g) optionally, collecting said toner particle.
    Type: Grant
    Filed: January 14, 2019
    Date of Patent: June 29, 2021
    Assignee: Xerox Corporation
    Inventors: Shivanthi Easwari Sriskandha, Richard P. N. Veregin, Guerino G. Sacripante, Edward G. Zwartz, Michael Steven Hawkins
  • Patent number: 11001662
    Abstract: A composition including a three-dimensional polymeric printing powder; an organic polymeric additive on at least a portion of an external surface of the three-dimensional polymeric printing powder; wherein the organic polymeric additive is optionally cross-linked; and optionally, an inorganic additive on at least a portion of an external surface of the three-dimensional polymeric printing powder. A process for preparing a three-dimensional polymeric printing powder having an organic polymeric additive disposed thereon. A process for employing the three-dimensional polymeric printing powder including selective laser sintering.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: May 11, 2021
    Assignee: Xerox Corporation
    Inventors: Richard P. N. Veregin, Nan-Xing Hu, Karen A. Moffat, Michael Steven Hawkins
  • Publication number: 20200307027
    Abstract: A process including providing a three-dimensional printing powder dispersion comprising a three-dimensional printing powder, an optional dispersing agent, and water; providing an emulsion of an organic polymeric additive; combining the three-dimensional printing powder dispersion and the emulsion of organic polymeric additive to form a mixture comprising the three-dimensional printing powder dispersion and the emulsion of organic polymeric additive; and drying the mixture of the three-dimensional printing powder dispersion and the emulsion of organic polymeric additive.
    Type: Application
    Filed: March 29, 2019
    Publication date: October 1, 2020
    Inventors: Richard P. N. Veregin, Karen A. Moffat, Michael Steven Hawkins, Shivanthi Easwari Sriskandha
  • Publication number: 20200308330
    Abstract: A composition including a three-dimensional polymeric printing powder; an organic polymeric additive on at least a portion of an external surface of the three-dimensional polymeric printing powder; wherein the organic polymeric additive is optionally cross-linked; and optionally, an inorganic additive on at least a portion of an external surface of the three-dimensional polymeric printing powder. A process for preparing a three-dimensional polymeric printing powder having an organic polymeric additive disposed thereon. A process for employing the three-dimensional polymeric printing powder including selective laser sintering.
    Type: Application
    Filed: March 29, 2019
    Publication date: October 1, 2020
    Inventors: Richard P. N. Veregin, Nan-Xing Hu, Karen A. Moffat, Michael Steven Hawkins
  • Publication number: 20200225598
    Abstract: A toner process including a) mixing reagents comprising at least one amorphous resin, an optional crystalline resin, an optional styrene, acrylate or styrene/acrylate, an optional wax, and an optional colorant to form an emulsion comprising a resin particle; b) adding at least one aggregating agent and aggregating said resin particle to form a nascent toner particle; c) optionally, adding one or more resins to form a shell on said nascent toner particle to yield a core-shell particle; d) adding a first chelating agent and a second chelating agent; wherein said first chelating agent and said second chelating agent are different; e) freezing particle growth to form an aggregated toner particle; f) coalescing said aggregated toner particle to form a toner particle; and g) optionally, collecting said toner particle.
    Type: Application
    Filed: January 14, 2019
    Publication date: July 16, 2020
    Inventors: Shivanthi Easwari Sriskandha, Richard P. N. Veregin, Guerino G. Sacripante, Edward G. Zwartz, Michael Steven Hawkins
  • Patent number: 10539896
    Abstract: A toner composition including an amorphous polyester resin; a crystalline polyester resin; a styrene acrylate copolymer; an optional wax; and an optional colorant; wherein the amorphous polyester resin comprises a rosin monomer content of from about 10 to about 25 percent rosin monomer based upon the total amount of monomer comprising the amorphous polyester resin. A toner composition including a core and at least one shell disposed thereover. A toner process including contacting an amorphous polyester resin; a crystalline polyester resin; a styrene acrylate copolymer; an optional wax; an optional colorant; and an optional aggregating agent; wherein the amorphous polyester resin comprises a rosin monomer content of from about 10 to about 25 percent rosin monomer heating to form aggregated toner particles; optionally, adding a shell resin to the aggregated toner particles, heating to coalesce the particles; and recovering the toner particles.
    Type: Grant
    Filed: January 14, 2019
    Date of Patent: January 21, 2020
    Assignee: Xerox Corporation
    Inventors: Kimberly D. Nosella, Guerino G. Sacripante, Edward G. Zwartz, Michael Steven Hawkins
  • Patent number: 8691482
    Abstract: The instant disclosure describes methods for preparing latex resins for coated carriers using surfactant partitioning, which resins exhibit both lower ? potential and greater latex stability, while not adversely affecting particle size, toner charge or other metrics.
    Type: Grant
    Filed: June 1, 2013
    Date of Patent: April 8, 2014
    Assignee: Xerox Corporation
    Inventors: Daryl W Vanbesien, Michael Steven Hawkins, Corey Tracy, Richard P N Veregin, Karen A Moffat, Paul Joseph Gerroir, Thomas E Enright, Valerie Farrugia
  • Publication number: 20130260305
    Abstract: The instant disclosure describes methods for preparing latex resins for coated carriers using surfactant partitioning, which resins exhibit both lower ? potential and greater latex stability, while not adversely affecting particle size, toner charge or other metrics.
    Type: Application
    Filed: June 1, 2013
    Publication date: October 3, 2013
    Inventors: Daryl W Vanbesien, Michael Steven Hawkins, Corey Tracy, Richard PN Veregin, Karen A Moffat, Paul Joseph Gerroir, Thomas E Enright, Valerie Farrugia
  • Patent number: 8461252
    Abstract: The instant disclosure describes methods for preparing latex resins for coated carriers using surfactant partitioning, which resins exhibit both lower ? potential and greater latex stability, while not adversely affecting particle size, toner charge or other metrics.
    Type: Grant
    Filed: November 12, 2011
    Date of Patent: June 11, 2013
    Assignee: Xerox Corporation
    Inventors: Daryl W Vanbesien, Michael Steven Hawkins, Corey Tracy, Richard P N Veregin, Karen A Moffat, Paul Joseph Gerroir, Thomas E Enright, Valerie Farrugia
  • Publication number: 20130123403
    Abstract: The instant disclosure describes methods for preparing latex resins for coated carriers using surfactant partitioning, which resins exhibit both lower ? potential and greater latex stability, while not adversely affecting particle size, toner charge or other metrics.
    Type: Application
    Filed: November 12, 2011
    Publication date: May 16, 2013
    Applicant: XEROX CORPORATION
    Inventors: Daryl W. Vanbesien, Michael Steven Hawkins, Corey Tracy, Richard P.N Veregin, Karen A. Moffat, Paul Joseph Gerroir, Thomas E. Enright, Valerie Farrugia
  • Patent number: 8211604
    Abstract: A process for making a self-emulsifying composite suitable for use in forming latex emulsions includes contacting a resin with a solid or highly concentrated surfactant, a solid neutralizing agent in the absence of water and an organic solvent to form a mixture, melt mixing the mixture, and forming a self-emulsifying composite of the melt mixed mixture such as a granule. Self-emulsifying granules are also provided and configured to form a latex emulsion when added to water, which may then be utilized to form a toner.
    Type: Grant
    Filed: June 16, 2009
    Date of Patent: July 3, 2012
    Assignee: Xerox Corporation
    Inventors: Santiago Faucher, Rina Carlini, Joo T. Chung, Fumii Higuchi, Shigang Qiu, Allan K. Chen, Edward Graham Zwartz, Michael Steven Hawkins, Brian J. Andaya, Joseph L. Leonardo
  • Publication number: 20100316946
    Abstract: A process for making a self-emulsifying composite suitable for use in forming latex emulsions includes contacting a resin with a solid or highly concentrated surfactant, a solid neutralizing agent in the absence of water and an organic solvent to form a mixture, melt mixing the mixture, and forming a self-emulsifying composite of the melt mixed mixture such as a granule. Self-emulsifying granules are also provided and configured to form a latex emulsion when added to water, which may then be utilized to form a toner.
    Type: Application
    Filed: June 16, 2009
    Publication date: December 16, 2010
    Applicant: XEROX CORPORATION
    Inventors: Santiago Faucher, Rina Carlini, Joo T. Chung, Fumii Higuchi, Shigang Qiu, Allan K. Chen, Edward Graham Zwartz, Michael Steven Hawkins, Brian J. Andaya, Joseph L. Leonardo
  • Patent number: 7541060
    Abstract: Disclosed is a technique for producing bichromal balls that are adapted for use in high temperature applications. The bichromal balls find particular application in signs and display devices that can be used in environments in which the temperature exceeds 40° C.
    Type: Grant
    Filed: August 17, 2004
    Date of Patent: June 2, 2009
    Assignee: Xerox Corporation
    Inventors: San-Ming Yang, Thomas Edward Enright, Aurelian Valeriu Magdalinis, Ahmed Abd Alzamly, Man-Chung Tam, Carol Ann Jennings, Peter M. Kazmaier, Marko D. Saban, Michael Steven Hawkins
  • Publication number: 20080152896
    Abstract: A method to form a stable suspension includes dispersive mixing a semi-soft or molten fluoropolymer and a plurality of carbon fibrils by mechanical shear force to form a polymer composite and dispersing the composite into an effective solvent to form a stable suspension.
    Type: Application
    Filed: December 22, 2006
    Publication date: June 26, 2008
    Inventors: Carolyn Patricia Moorlag, Nan-Xing Hu, Michael Steven Hawkins, Guiqin Song, Nicoleta Doinita Mihai