Patents by Inventor Erik W. Perez

Erik W. Perez 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).

  • Perfluoropolyether primary bromides and lodides
    Patent number: 7148385
    Abstract: A perfluoropolyether and a composition comprising the perfluoropolyether are provided in which the perfluoropolyether comprises at least one bromine or iodine atom at the primary position of the perfluoropolyether. Also provided is a process for producing the composition in which the process comprises contacting a perfluoropolyether acid fluoride moiety with a metal bromide or metal iodide or a suitable polyether secondary iodide under a condition sufficient to effect the production of a perfluoropolyether comprising at least one bromine or iodine at the primary position.
    Type: Grant
    Filed: July 25, 2003
    Date of Patent: December 12, 2006
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Jon L. Howell, Erik W. Perez, Alfred Waterfeld, Chadron Mark Friesen, Joseph Stuart Thrasher, Ireneusz Nowak
  • Thermally stable perfluoropolyethers and processes therefor and therewith
    Publication number: 20040186211
    Abstract: A perfluoropolyether, a composition comprising the perfluoropolyether, a process for producing the perfluoropolyether, and a process for improving the thermostability of grease or lubricant are provided. The perfluoropolyether comprises perfluoroalkyl radical end groups in which the radical has at least 3 carbon atoms per radical and is substantially free of perfluoromethyl and perfluoroethyl end groups.
    Type: Application
    Filed: March 30, 2004
    Publication date: September 23, 2004
    Inventors: Jon L. Howell, Erik W. Perez, Alfred Waterfeld, Chadron Mark Friesen, Joseph Stuart Thrasher
  • Perfluoropolyether primary bromides and lodides
    Publication number: 20040024250
    Abstract: A perfluoropolyether and a composition comprising the perfluoropolyether are provided in which the perfluoropolyether comprises at least one bromine or iodine atom at the primary position of the perfluoropolyether. Also provided is a process for producing the composition in which the process comprises contacting a perfluoropolyether acid fluoride moiety with a metal bromide or metal iodide or a suitable polyether secondary iodide under a condition sufficient to effect the production of a perfluoropolyether comprising at least one bromine or iodine at the primary position.
    Type: Application
    Filed: July 25, 2003
    Publication date: February 5, 2004
    Inventors: Jon L. Howell, Erik W. Perez, Alfred Waterfeld, Chadron Mark Friesen, Joseph Stuart Thrasher, Ireneusz Nowak
  • Perfluoropolyether primary bromides and iodides
    Patent number: 6653511
    Abstract: A perfluoropolyether and a composition comprising the perfluoropolyether are provided in which the perfluoropolyether comprises at least one bromine or iodine atom at the primary position of the perfluoropolyether. Also provided is a process for producing the composition in which the process comprises contacting a perfluoropolyether acid fluoride moiety with a metal bromide or metal iodide or a suitable polyether secondary iodide under a condition sufficient to effect the production of a perfluoropolyether comprising at least one bromine or iodine at the primary position.
    Type: Grant
    Filed: September 9, 2002
    Date of Patent: November 25, 2003
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Jon L. Howell, Erik W. Perez, Alfred Waterfeld, Chadron Mark Friesen, Joseph Stuart Thrasher, Ireneusz Nowak
  • Perfluoropolyether primary bromides and iodides
    Publication number: 20030013924
    Abstract: A perfluoropolyether and a composition comprising the perfluoropolyether are provided in which the perfluoropolyether comprises at least one bromine or iodine atom at the primary position of the perfluoropolyether. Also provided is a process for producing the composition in which the process comprises contacting a perfluoropolyether acid fluoride moiety with a metal bromide or metal iodide or a suitable polyether secondary iodide under a condition sufficient to effect the production of a perfluoropolyether comprising at least one bromine or iodine at the primary position.
    Type: Application
    Filed: September 9, 2002
    Publication date: January 16, 2003
    Inventors: Jon L. Howell, Erik W. Perez, Alfred Waterfeld, Chadron Mark Friesen, Joseph Stuart Thrasher, Ireneusz Nowak