Patents by Inventor Kelly D. Barton

Kelly D. Barton 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).

  • Process for producing dispersions of highly fluorinated polymers
    Patent number: 7989513
    Abstract: A process for producing a dispersion of a highly fluorinated ion exchange polymer is provided in which a dispersion of a highly fluorinated ion exchange polymer in a first liquid that includes at least 10 wt % of an organic liquid is atomized and released into a heated gas to produce flowable particles of highly fluorinated ion exchange polymer having dry surface/exteriors and an internal residual moisture content of at least 4 wt %. The particles are dispersed in a second liquid to produce a second dispersion of highly fluorinated ion exchange polymer from which proton exchange membranes and electrodes for fuel cells may be produced.
    Type: Grant
    Filed: December 13, 2007
    Date of Patent: August 2, 2011
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Vinci Martinez Felix, Kelly D. Barton
  • PROCESS FOR PRODUCING DISPERSIONS OF HIGHLY FLUORINATED POLYMERS
    Publication number: 20080160351
    Abstract: A process for producing a dispersion of a highly fluorinated ion exchange polymer is provided in which a dispersion of a highly fluorinated ion exchange polymer in a first liquid that includes at least 10 wt % of an organic liquid is atomized and released into a heated gas to produce flowable particles of highly fluorinated ion exchange polymer having dry surface/exteriors and an internal residual moisture content of at least 4 wt %. The particles are dispersed in a second liquid to produce a second dispersion of highly fluorinated ion exchange polymer from which proton exchange membranes and electrodes for fuel cells may be produced.
    Type: Application
    Filed: December 13, 2007
    Publication date: July 3, 2008
    Inventors: VINCI MARTINEZ FELIX, Kelly D. Barton
  • Multilayer structure including an active electrochemical material and ionic polymer in a electrochemical cell
    Patent number: 6986967
    Abstract: Multilayer articles, particularly multilayer articles having electrical or ionic conductivity, are made using an improved melt extrusion process. The process includes a combination step in which a macroscopically homogeneous mass is formed prior to introduction into an extruder. The multilayer article may include an electrode layer and a separator layer that are extruded onto a metal current collector. Such structures are particularly useful in lithium-ion batteries.
    Type: Grant
    Filed: October 30, 2002
    Date of Patent: January 17, 2006
    Assignee: E. I. du Pont de Nemours and Company, Inc.
    Inventors: Kelly D. Barton, Donald G. Gray, Guy E. Rockwell
  • Process for forming multilayer articles by melt extrusion
    Publication number: 20030054245
    Abstract: Multilayer articles, particularly multilayer articles having electrical or ionic conductivity, are made using an improved melt extrusion process. The process includes a combination step in which a macroscopically homogeneous mass is formed prior to introduction into an extruder. The multilayer article may include an electrode layer and a separator layer that are extruded onto a metal current collector. Such structures are particularly useful in lithium-ion batteries.
    Type: Application
    Filed: October 30, 2002
    Publication date: March 20, 2003
    Inventors: Kelly D. Barton, Donald G. Gray, Guy E. Rockwell
  • Process for forming multilayer articles by melt extrusion
    Patent number: 6503432
    Abstract: Multilayer articles, particularly multilayer articles having electrical or ionic conductivity, are made using an improved melt extrusion process. The process includes a combination step in which a macroscopically homogeneous mass is formed prior to introduction into an extruder. The multilayer article may include an electrode layer and a separator layer that are extruded onto a metal current collector. Such structures are particularly useful in lithium-ion batteries.
    Type: Grant
    Filed: March 2, 2000
    Date of Patent: January 7, 2003
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Kelly D. Barton, Donald G. Gray, Guy E. Rockwell