Patents by Inventor James R. Combes

James R. Combes 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).

  • Processes for the preparation of colorants
    Patent number: 6054179
    Abstract: A process which comprises maintaining a mixture of carbon dioxide, surface treating agent and colorant at a temperature of from about -10.degree. C. to about 200.degree. C., and optionally removing carbon dioxide.
    Type: Grant
    Filed: November 30, 1998
    Date of Patent: April 25, 2000
    Assignee: Xerox Corporation
    Inventors: James R. Combes, Carl P. Tripp, Richard P. N. Veregin, Daniel A. Foucher
  • Supercritical processes
    Patent number: 5725987
    Abstract: A process which comprises heating at a temperature of from about 31.degree. C. to about 200.degree. C. a mixture of supercritical carbon dioxide, metal or metal oxide, and a surface treating component, optionally removing carbon dioxide, and optionally cooling.
    Type: Grant
    Filed: November 1, 1996
    Date of Patent: March 10, 1998
    Assignee: Xerox Corporation
    Inventors: James R. Combes, Hadi K. Mahabadi, Carl P. Tripp
  • Processes for toner additives with liquid carbon dioxide
    Patent number: 5714299
    Abstract: A process which comprises heating at a temperature of from about -60.degree. to about 31.degree. C. a mixture of liquid carbon dioxide, metal or metal oxide, and a surface treating component, and optionally removing carbon dioxide.
    Type: Grant
    Filed: November 4, 1996
    Date of Patent: February 3, 1998
    Assignee: Xerox Corporation
    Inventors: James R. Combes, Hadi K. Mahabadi, Carl P. Tripp
  • Heterogeneous polymerization in carbon dioxide
    Patent number: 5679737
    Abstract: The heterogeneous polymerization of water-insoluble polymer in CO.sub.2 is disclosed. The method comprises providing a heterogeneous reaction mixture comprising CO.sub.2, a monomer, and a surfactant, then polymerizing the monomer to form a water-insoluble polymer.
    Type: Grant
    Filed: December 6, 1996
    Date of Patent: October 21, 1997
    Assignee: The University of North Carolina at Chapel Hill
    Inventors: Joseph M. DeSimone, Elise E. Maury, James R. Combes, Yusuf Z. Menceloglu
  • Heterogenous polymerization in carbon dioxide
    Patent number: 5639836
    Abstract: The heterogeneous polymerization of water-soluble polymer in CO.sub.2 is disclosed. The method comprises providing a heterogeneous reaction mixture comprising CO.sub.2, a monomer, and a surfactant, then polymerizing the monomer to form a water-soluble polymer.
    Type: Grant
    Filed: August 9, 1996
    Date of Patent: June 17, 1997
    Assignee: The University of North Carolina at Chapel Hill
    Inventors: Joseph M. DeSimone, Elise E. Maury, James R. Combes, Yusuf Z. Menceloglu
  • Heterogeneous polymerization in carbon dioxide
    Patent number: 5589105
    Abstract: The heterogeneous polymerization of water-insoluble polymer in CO.sub.2 is disclosed. The method comprises providing a heterogeneous reaction mixture comprising CO.sub.2, a monomer, and a surfactant, then polymerizing the monomer to form a water-insoluble polymer.
    Type: Grant
    Filed: May 18, 1995
    Date of Patent: December 31, 1996
    Assignee: The University of North Carolina at Chapel Hill
    Inventors: Joseph M. DeSimone, Elise E. Maury, James R. Combes, Yusuf Z. Menceloglu
  • Heterogeneous polymerization in carbon dioxide
    Patent number: 5506317
    Abstract: The heterogeneous polymerization of water-insoluble polymer in CO.sub.2 is disclosed. The method comprises providing a heterogeneous reaction mixture comprising CO.sub.2, a monomer, and a surfactant, then polymerizing the monomer to form a water-insoluble polymer.
    Type: Grant
    Filed: January 25, 1995
    Date of Patent: April 9, 1996
    Assignee: The University of North Carolina at Chapel Hill
    Inventors: Joseph M. DeSimone, Elise E. Maury, James R. Combes, Yusuf Z. Menceloglu
  • Heterogeneous polymerization in carbon dioxide
    Patent number: 5451633
    Abstract: The heterogeneous polymerization of water-insoluble polymer in CO.sub.2 is disclosed. The method comprises providing a heterogeneous reaction mixture comprising CO.sub.2, a monomer, and a surfactant, then polymerizing the monomer to form a water-insoluble polymer.
    Type: Grant
    Filed: September 1, 1994
    Date of Patent: September 19, 1995
    Assignee: The University of North Carolina at Chapel Hill
    Inventors: Joseph M. DeSimone, Elise E. Maury, James R. Combes, Yusuf Z. Menceloglu
  • Heterogeneous polymerization in carbon dioxide
    Patent number: 5382623
    Abstract: The heterogeneous polymerization of water-insoluble polymer in CO.sub.2 is disclosed. The method comprises providing a heterogeneous reaction mixture comprising CO.sub.2, a monomer, and a surfactant, then polymerizing the monomer to form a water-insoluble polymer.
    Type: Grant
    Filed: February 17, 1994
    Date of Patent: January 17, 1995
    Assignee: The University of North Carolina at Chapel Hill
    Inventors: Joseph M. DeSimone, Elise E. Maury, James R. Combes, Yusuf Z. Menceloglu
  • Heterogeneous polymerization in carbon dioxide
    Patent number: 5312882
    Abstract: The heterogeneous polymerization of water-soluble polymer in CO.sub.2 is disclosed. The method comprises providing a heterogeneous reaction mixture comprising CO.sub.2, a monomer, and a surfactant, then polymerizing the monomer to form a water-soluble polymer.
    Type: Grant
    Filed: July 30, 1993
    Date of Patent: May 17, 1994
    Assignee: The University of North Carolina at Chapel Hill
    Inventors: Joseph M. DeSimone, Elise E. Maury, James R. Combes, Yusuf Z. Menceloglu
  • Supercritical fluid processes
    Patent number: H1839
    Abstract: A process for the preparation of toner additive wax particles which comprises the micronization of said particles from a supercritical solution.
    Type: Grant
    Filed: April 17, 1997
    Date of Patent: February 1, 2000
    Assignee: Xerox Corporation
    Inventors: James R. Combes, Samir Kumar, Lewis S. Smith, Hadi K. Mahabadi, Peter G. Odell