Patents by Inventor Royce Elton Ennis

Royce Elton Ennis 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).

  • Partially neutralized chlorosulfonated polyolefin elastomers
    Patent number: 7838601
    Abstract: Partially neutralized chlorosulfonated polyolefin elastomers containing 0.5-10 weight percent chlorine and 0.25 to 5 weight percent sulfur are prepared from polyolefin elastomer base resins selected from the group consisting of propylene/ethylene copolymers, ethylene/propylene/diene copolymers, isobutylene/diene copolymers, isobutylene homopolymers, hydrogenated styrene/butadiene block copolymers and hydrogenated styrene/isoprene block copolymers.
    Type: Grant
    Filed: March 13, 2008
    Date of Patent: November 23, 2010
    Assignee: DuPont Performance Elastomers L.L.C.
    Inventors: Royce Elton Ennis, Avinash C. Gadkari, Furman Eugene Glenn
  • Partially neutralized chlorosulfonated polyolefin elastomers
    Patent number: 7550539
    Abstract: At least partially neutralized chlorosulfonated ethylene/alpha-olefin elastomers containing 0.5-10 weight percent chlorine and 0.25 to 5 weight percent sulfur are prepared from ethylene/alpha-olefin copolymer base resins having a ratio of weight average molecular weight (Mw) to number average molecular weight (Mn) less than 3.5.
    Type: Grant
    Filed: March 13, 2008
    Date of Patent: June 23, 2009
    Assignee: Dupont Performance Elastomers LLC
    Inventors: Royce Elton Ennis, Furman Eugene Glenn, Sr.
  • Partially neutralized chlorosulfonated polyolefin elastomers
    Publication number: 20080249243
    Abstract: Partially neutralized chlorosulfonated polyolefin elastomers containing 0.5-10 weight percent chlorine and 0.25 to 5 weight percent sulfur are prepared from polyolefin elastomer base resins selected from the group consisting of propylene/ethylene copolymers, ethylene/propylene/diene copolymers, isobutylene/diene copolymers, isobutylene homopolymers, hydrogenated styrene/butadiene block copolymers and hydrogenated styrene/isoprene block copolymers.
    Type: Application
    Filed: March 13, 2008
    Publication date: October 9, 2008
    Inventors: Royce Elton Ennis, Avinash C. Gadkari, Furman Eugene Glenn
  • Process for chlorosulfonating polyolefins
    Publication number: 20080249254
    Abstract: Chlorosulfonated polyolefin elastomers containing 0.5-10 weight percent chlorine and 0.25 to 5 weight percent sulfur are prepared in a low temperature (50° to 75° C.) solution process employing a chlorosulfonation agent of sulfuryl chloride or the combination of Cl2 and SO2.
    Type: Application
    Filed: March 13, 2008
    Publication date: October 9, 2008
    Inventor: Royce Elton Ennis
  • Process for the manufacture of at least partially neutralized chlorosulfonated polyolefin elastomers in oil
    Publication number: 20080249218
    Abstract: An oil concentrate comprising oil and one or more at least partially neutralized chlorosulfonated polyolefin elastomers containing 0.5-50 weight percent chlorine and 0.25 to 5 weight percent sulfur is disclosed.
    Type: Application
    Filed: March 13, 2008
    Publication date: October 9, 2008
    Inventors: Royce Elton Ennis, Furman Eugene Glenn
  • Partially neutralized chlorosulfonated polyolefin elastomers
    Publication number: 20080249253
    Abstract: At least partially neutralized chlorosulfonated ethylene/alpha-olefin elastomers containing 0.5-10 weight percent chlorine and 0.25 to 5 weight percent sulfur are prepared from ethylene/alpha-olefin copolymer base resins having a ratio of weight average molecular weight (Mw) to number average molecular weight (Mn) less than 3.5.
    Type: Application
    Filed: March 13, 2008
    Publication date: October 9, 2008
    Inventors: Royce Elton Ennis, Furman Eugene Glenn