Patents by Inventor Karl Jeffrey Sweetman

Karl Jeffrey Sweetman 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).

  • Alkoxylation of fluorinated alcohols
    Patent number: 8053606
    Abstract: A fluorinated alkylalkoxylate, and a process for its preparation in which at least one fluorinated alcohol is contacted with at least one alkylene epoxide in the presence of a catalyst system comprising an alkali metal borohydride, and an organic quaternary salt.
    Type: Grant
    Filed: April 30, 2009
    Date of Patent: November 8, 2011
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Karl Jeffrey Sweetman, Scott Andrew Backer
  • Copolymers of vinyl- and allylsilanes
    Patent number: 8022152
    Abstract: Ethylene and allyl- or vinylsilanes are efficiently copolymerized by certain late transition metal complexes containing selected bidentate or tridentate ligands. The resulting novel polymers may be crosslinked by moisture when vinylsilane contains groups bound to silicon which are hydrolyzable. The polymers are useful for wire coating, crosslinked foams, pipes, and other uses.
    Type: Grant
    Filed: December 19, 2007
    Date of Patent: September 20, 2011
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Steven Dale Ittel, Lynda Kaye Johnson, Lin Wang, Ying Wang, Elizabeth Forrester McCord, Catherine E. Radzewich, Stephan James McLain, Karl Jeffrey Sweetman, Alison Margaret Anne Bennett, Alex Sergey Ionkin, Rinaldo Soria Schiffino
  • ALKOXYLATION OF FLUORINATED ALCOHOLS
    Publication number: 20100280281
    Abstract: A fluorinated alkylalkoxylate, and a process for its preparation in which at least one fluorinated alcohol is contacted with at least one alkylene epoxide in the presence of a catalyst system comprising an alkali metal borohydride, and an organic quaternary salt.
    Type: Application
    Filed: April 30, 2009
    Publication date: November 4, 2010
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Karl Jeffrey Sweetman, Scott Andrew Backer
  • Polymers of substituted cyclopentenes
    Patent number: 6670433
    Abstract: Substituted cyclopentenes, such as alkyl cyclopentenes, are polymerized by selected &agr;-imine complexes of nickel and palladium. The polymers are useful as molding resins or elastomers. Also disclosed herein are novel catalysts for the polymerization of cyclopentenes to form novel higher melting homopolycyclopentenes.
    Type: Grant
    Filed: April 2, 2001
    Date of Patent: December 30, 2003
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Stephan James McLain, Elizabeth Forrester McCord, Alison Margaret Anne Bennett, Steven Dale Ittel, Karl Jeffrey Sweetman, Mark F. Teasley
  • Polymers of substituted cyclopentenes
    Patent number: 6258908
    Abstract: Substituted cyclopentenes, such as alkyl cyclopentenes, are polymerized by selected &agr;-imine complexes of nickel and palladium. The polymers are useful as molding resins or elastomers. Also disclosed herein are novel catalysts for the polymerization of cyclopentenes to form novel higher melting homopolycyclopentenes.
    Type: Grant
    Filed: March 26, 1999
    Date of Patent: July 10, 2001
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Stephan James McLain, Elizabeth Forrester McCord, Alison Margaret Anne Bennett, Steven Dale Ittel, Karl Jeffrey Sweetman, Mark F. Teasley