Patents by Inventor Jason S. Keiper

Jason S. Keiper 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).

  • Phosphate fluorosurfactants for use in carbon dioxide
    Patent number: 7122060
    Abstract: A method of removing water from a composition of matter comprises contacting a first composition of matter comprising water with a second composition of matter comprising: (1) at least one surfactant comprising at least one phosphate group and (2) a solvent comprising carbon dioxide, wherein at least a portion of the surfactant is soluble in the solvent, such that the at least one surfactant removes at least a portion of the water from the first composition.
    Type: Grant
    Filed: December 23, 2003
    Date of Patent: October 17, 2006
    Assignees: The University of North Carolina, North Carolina State University
    Inventors: Joseph M. DeSimone, Jason S. Keiper
  • Phosphate fluorosurfactants for use in carbon dioxide
    Publication number: 20040138080
    Abstract: A method of removing water from a composition of matter comprises contacting a first composition of matter comprising water with a second composition of matter comprising: (1) at least one surfactant comprising at least one phosphate group and (2) a solvent comprising carbon dioxide, wherein at least a portion of the surfactant is soluble in the solvent, such that the at least one surfactant removes at least a portion of the water from the first composition
    Type: Application
    Filed: December 23, 2003
    Publication date: July 15, 2004
    Inventors: Joseph M. DeSimone, Jason S. Keiper
  • Phosphate fluorosurfactants for use in carbon dioxide
    Patent number: 6684525
    Abstract: A method of removing water from a composition of matter comprises contacting a first composition of matter comprising water with a second composition of matter comprising: (1) at least one surfactant comprising at least one phosphate group and (2) a solvent comprising carbon dioxide, wherein at least a portion of the surfactant is soluble in the solvent, such that the at least one surfactant removes at least a portion of the water from the first composition
    Type: Grant
    Filed: September 25, 2001
    Date of Patent: February 3, 2004
    Assignees: University of North Carolina at Chapel Hill, North Carolina State University
    Inventors: Joseph M. DeSimone, Jason S. Keiper
  • Zwitterionic gemini surfactants for use in carbon dioxide
    Publication number: 20020123452
    Abstract: A surfactant comprises a first ionic group comprising at least one hydrocarbon-containing chain; a second ionic group comprising at least one hydrocarbon-containing chain, wherein the second ionic group has a charge opposite to the charge of the first ionic group; and a hydrocarbon spacer group covalently bonded to each of the first and second ionic groups. The surfactant is solubilized in carbon dioxide.
    Type: Application
    Filed: January 24, 2002
    Publication date: September 5, 2002
    Inventors: Joseph M. DeSimone, Jason S. Keiper, Fredric M. Menger, Andrey V. Peresypkin, Caroline J. Clavel
  • Phosphate fluorosurfactants for use in carbon dioxide
    Publication number: 20020107159
    Abstract: A method of removing water from a composition of matter comprises contacting a first composition of matter comprising water with a second composition of matter comprising: (1) at least one surfactant comprising at least one phosphate group and (2) a solvent comprising carbon dioxide, wherein at least a portion of the surfactant is soluble in the solvent, such that the at least one surfactant removes at least a portion of the water from the first composition
    Type: Application
    Filed: September 25, 2001
    Publication date: August 8, 2002
    Inventors: Joseph D. DeSimone, Jason S. Keiper