Patents by Inventor Kenneth Paul Kelch

Kenneth Paul Kelch 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).

  • Synthesis of hexafluoropropylene
    Patent number: 6924403
    Abstract: The present invention relates to the process of pyrolyzing tetrafluoroethylene to hexafluoropropylene by carrying out the pyrolysis in a tubular reactor that is lined with either nickel or nickel alloy which contains no greater than 8 wt % chromium.
    Type: Grant
    Filed: May 7, 2003
    Date of Patent: August 2, 2005
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: John James Barnes, Kenneth Paul Kelch, Thomas D. Sandbrook, David John Van Bramer
  • Synthesis of hexafluoropropylene
    Publication number: 20040002621
    Abstract: The present invention relates to the process of pyrolyzing tetrafluoroethylene to hexafluoropropylene by carrying out the pyrolysis in a tubular reactor that is lined with either nickel or nickel alloy which contains no greater than 8 wt % chromium.
    Type: Application
    Filed: May 7, 2003
    Publication date: January 1, 2004
    Inventors: John James Barnes, Kenneth Paul Kelch, Thomas D. Sandbrook, David John Van Bramer