Patents by Inventor Christopher John Bish

Christopher John Bish 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).

  • MANUFACTURE OF PERFLUOROELASTOMER COMPOUNDS CONTAINING FIBRILLATING PTFE
    Publication number: 20110269909
    Abstract: Curable perfluoroelastomer compounds are prepared by mixing a composition comprising perfluoroelastomer, 1-20 phr fibrillating PTFE, and curative for a time ML (ASTM D5289), measured on sequential samples of compound taken at 5 minute intervals, differ by less than 5%. Articles are made therefrom by curing the compounds to form crosslinks.
    Type: Application
    Filed: April 29, 2010
    Publication date: November 3, 2011
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventor: CHRISTOPHER JOHN BISH
  • Process for coagulating perfluoroelastomers
    Publication number: 20090270573
    Abstract: In a process for the manufacture of perfluoroelastomers, a weak organic acid, e.g. glacial acetic acid, is employed to coagulate an acidic perfluoroelastomer dispersion.
    Type: Application
    Filed: April 29, 2008
    Publication date: October 29, 2009
    Inventor: Christopher John BISH
  • Perfluoroelastomer compositions for low temperature applications
    Patent number: 7381774
    Abstract: Perfluoroelastomers that contain high levels (i.e. about 40 mole percent or more) of perfluoro(alkyl vinyl ether) copolymerized units can form stable blends with higher levels of perfluoropolyethers than can perfluoroelastomers that contain lower levels of perfluoro(alkyl vinyl ether) units. Thus, the former blends have better low temperature properties than the latter.
    Type: Grant
    Filed: October 25, 2005
    Date of Patent: June 3, 2008
    Assignee: DuPont Performance Elastomers, LLC
    Inventors: Christopher John Bish, Michael Cregg Coughlin
  • Curable perfluoroelastomer composition
    Patent number: 6638999
    Abstract: Perfluoroelastomer compositions comprising perfluoroelastomers having copolymerized units of tetrafluoroethylene, a perfluoro(vinyl ether), and a nitrile-containing cure site monomer are cured with certain nitrogen-containing nucleophilic compounds. The nucleophilic compounds also act as dual curatives in perfluoroelastomer compositions which incorporate other curing agents.
    Type: Grant
    Filed: February 6, 2001
    Date of Patent: October 28, 2003
    Assignee: DuPont Dow Elastomers LLC.
    Inventors: Christopher John Bish, Peter Arnold Morken, Walter Werner Schmiegel