Patents by Inventor Peter V. Nguyen

Peter V. Nguyen 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).

  • Magenta Toner
    Publication number: 20160004175
    Abstract: A process for making a latex emulsion where distillation occurs at an elevated temperature is used to make resin particles with a conditioned surface which can be used to make magenta toner with increased efficiency.
    Type: Application
    Filed: July 1, 2014
    Publication date: January 7, 2016
    Inventors: Shigeng Li, Christopher M. Wolfe, Randy P Tin, Eric Godshall, Shigang Qiu, Peter V Nguyen, Jay L Schneider, Linda S Schriever, Steven M Malachowski, Amy A Grillo, Chieh-Min Cheng
  • Production of latex using a wipe film evaporator
    Patent number: 9223238
    Abstract: A process is disclosed for making a resin emulsion suitable for use in forming toner particles including using a wiped film evaporator for removing residual solvents.
    Type: Grant
    Filed: June 18, 2013
    Date of Patent: December 29, 2015
    Assignee: Xerox Corporation
    Inventors: Amy A Grillo, Shigang Qiu, Peter V Nguyen, Chieh-Min Cheng
  • Preparing Resin Emulsions
    Publication number: 20150168858
    Abstract: A process for making a latex emulsion suitable for use in a toner composition which applies the model of Brinkman to predict phase inversion point (PIP) during phase invention emulsification (PIE), including using this model to calculate the amount of water needed to complete the phase inversion for solvent reuse formulation.
    Type: Application
    Filed: December 16, 2013
    Publication date: June 18, 2015
    Applicant: Xerox Corporation
    Inventors: Shigeng Li, Shigang Qiu, Peter V. Nguyen, Linda S. Schriever, Amy A. Grillo, Chieh-Min Cheng
  • Production of Latex using a Wipe Film Evaporator
    Publication number: 20140370437
    Abstract: A process is disclosed for making a resin emulsion suitable for use in forming toner particles including using a wiped film evaporator for removing residual solvents.
    Type: Application
    Filed: June 18, 2013
    Publication date: December 18, 2014
    Inventors: Amy A. Grillo, Shigang Qiu, Peter V. Nguyen, Chieh-Min Cheng
  • Toner compositions
    Patent number: 8142970
    Abstract: A toner having a core with a first latex having a specific glass transition temperature, and further having a shell surrounding the core with a second latex having a specific glass transition temperature and possessing functional groups, and processes for producing the same.
    Type: Grant
    Filed: August 24, 2010
    Date of Patent: March 27, 2012
    Assignee: Xerox Corporation
    Inventors: Zhen Lai, Yuhua Tong, Chieh-Min Cheng, Peter V. Nguyen, Jon T. Owens
  • TONER COMPOSITIONS
    Publication number: 20110039199
    Abstract: A toner having a core with a first latex having a specific glass transition temperature, and further having a shell surrounding the core with a second latex having a specific glass transition temperature and possessing functional groups, and processes for producing the same.
    Type: Application
    Filed: August 24, 2010
    Publication date: February 17, 2011
    Applicant: XEROX CORPORATION
    Inventors: Zhen Lai, Yuhua Tong, Chieh-Min Cheng, Peter V. Nguyen, Jon T. Owens
  • Toner compositions
    Patent number: 7794911
    Abstract: A toner having a core with a first latex having a specific glass transition temperature, and further having a shell surrounding the core with a second latex having a specific glass transition temperature and possessing functional groups, and processes for producing the same.
    Type: Grant
    Filed: September 5, 2006
    Date of Patent: September 14, 2010
    Assignee: Xerox Corporation
    Inventors: Zhen Lai, Yuhua Tong, Chieh-Min Cheng, Peter V. Nguyen, Jon T. Owens
  • Toner processes
    Patent number: 7645551
    Abstract: Disclosed herein are toner particles generated by emulsion/aggregation processes. The processes are conducted under conditions that shorten the time for coalescence and post-formation washing, thereby increasing efficiency of the processes as compared to conventional processes.
    Type: Grant
    Filed: March 6, 2007
    Date of Patent: January 12, 2010
    Assignee: Xerox Corporation
    Inventors: Amgad W. Sifain, Emily L. Moore, Anthony Uttaro, Jr., Peter V. Nguyen, Jon T. Owens, Ryan Accetta, Karen A. Moffat, Vladislav Skorokhod, Cuong Vong, Wafa F. Bashir, Richard P. N. Veregin, Shigang S. Qiu
  • TONER PROCESSES
    Publication number: 20080220359
    Abstract: Disclosed herein are toner particles generated by emulsion/aggregation processes. The processes are conducted under conditions that shorten the time for coalescence and post-formation washing, thereby increasing efficiency of the processes as compared to conventional processes.
    Type: Application
    Filed: March 6, 2007
    Publication date: September 11, 2008
    Applicant: XEROX CORPORATION
    Inventors: Amgad W. SIFAIN, Emily L. MOORE, Anthony UTTARO, Peter V. NGUYEN, Jon T. OWENS, Ryan ACCETTA, Karen A. MOFFAT, Vladislav SKOROKHOD, Cuong VONG, Wafa F. BASHIR, Richard P. N. VEREGIN, Shigang S. QIU
  • Toner compositions
    Publication number: 20080057431
    Abstract: A toner having a core with a first latex having a specific glass transition temperature, and further having a shell surrounding the core with a second latex having a specific glass transition temperature and possessing functional groups, and processes for producing the same.
    Type: Application
    Filed: September 5, 2006
    Publication date: March 6, 2008
    Inventors: Zhen Lai, Yuhua Tong, Chieh-Min Cheng, Peter V. Nguyen, Jon T. Owens
  • Toner processes
    Patent number: 7291437
    Abstract: A toner process comprising mixing a colorant dispersion with a latex, a wax dispersion, and a coagulant, and wherein the polymer latex selected possesses a weight average molecular weight of from about 20,000 to about 55,000, a number average molecular weight of from about 5,000 to about 18,000, an onset glass transition temperature Tg of from about 40° C. to about 80° C., and a particle size distribution PSD of from about 50 to about 500 nanometers.
    Type: Grant
    Filed: April 14, 2003
    Date of Patent: November 6, 2007
    Assignee: Xerox Corporation
    Inventors: Amy A. Grillo, Peter V. Nguyen, Donald Riley, Allan K. Chen, Emily L. Moore, Tie Hwee Ng, Chieh-Min Cheng
  • Toner processes
    Patent number: 6841329
    Abstract: A toner process comprising mixing a colorant dispersion with a latex, a wax dispersion, and a coagulant, and wherein the polymer present in the latex possesses a gel content of from about 0.5 to about 4.5 weight percent, a polymer melt flow index (MFI) of from about 20 to about 45 grams/10 minutes at about from about 115° C. to about 145° C., the crosslinking molecular weight Mc of the polymer being from about 12,000 to about 200,000, and the crosslinking density Me of the polymer being from about 1.2×10?9 to about 2×10?7/Kmole.
    Type: Grant
    Filed: April 14, 2003
    Date of Patent: January 11, 2005
    Assignee: Xerox Corporation
    Inventors: Peter V. Nguyen, Amy A. Albright, Donald Riley, Chieh-Min Cheng
  • Toner processes
    Publication number: 20040202952
    Abstract: A toner process comprising mixing a colorant dispersion with a latex, a wax dispersion, and a coagulant, and wherein the polymer latex selected possesses a weight average molecular weight of from about 20,000 to about 55,000, a number average molecular weight of from about 5,000 to about 18,000, an onset glass transition temperature Tg of from about 40° C. to about 80° C., and a particle size distribution PSD of from about 50 to about 500 nanometers.
    Type: Application
    Filed: April 14, 2003
    Publication date: October 14, 2004
    Applicant: Xerox Corporation
    Inventors: Amy A. Albright, Peter V. Nguyen, Donald Riley, Allan K. Chen, Emily L. Moore, Tie Hwee Ng, Chieh-Min Cheng
  • Toner processes
    Publication number: 20040202951
    Abstract: A toner process comprising mixing a colorant dispersion with a latex, a wax dispersion, and a coagulant, and wherein the polymer present in the latex possesses a gel content of from about 0.5 to about 4.5 weight percent, a polymer melt flow index (MFI) of from about 20 to about 45 grams/10 minutes at about from about 115° C. to about 145° C., the crosslinking molecular weight Mc of the polymer being from about 12,000 to about 200,000, and the crosslinking density Me of the polymer being from about 1.2×10−9 to about 2×10−7/Kmole.
    Type: Application
    Filed: April 14, 2003
    Publication date: October 14, 2004
    Applicant: Xerox Corporation
    Inventors: Peter V. Nguyen, Amy A. Albright, Donald Riley, Chieh-Min Cheng