Patents by Inventor Narayanaswami Raja Dharmarajan

Narayanaswami Raja Dharmarajan 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).

  • Electrical devices including ethylene, .alpha.-olefin, vinyl norbornene elastomers and ethylene .alpha.-olefin polymers
    Patent number: 5952427
    Abstract: Elastomeric polymers including ethylene, alpha-olefin and vinyl norbornene are shown to have improved extrusion characteristics, improved electrical properties, improved cure characteristics compared to ethylene, alpha-olefin, non-conjugated diene elastomeric polymers containing non-conjugated dienes other than vinyl norbornene. The elastomeric polymers containing vinyl norbornene generally have a branching index below 0.5. Such elastomeric polymers are combined with up to 30 parts of metallocene catalyzed ethylene, alpha-olefin copolymers to improve physical properties.
    Type: Grant
    Filed: June 5, 1997
    Date of Patent: September 14, 1999
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Narayanaswami Raja Dharmarajan, Periagaram Srinivasan Ravishankar, Charles Douglas Burrage
  • Electrical devices including ethylene, .alpha.-olefin, vinyl norbornene elastomers and ethylene .alpha.-olefin polymers
    Patent number: 5763533
    Abstract: Elastomeric polymers including ethylene, alpha-olefin and vinyl norbornene are shown to have improved extrusion characteristics, improved electrical properties, improved cure characteristics compared to ethylene, alpha-olefin, non-conjugated diene elastomeric polymers containing non-conjugated dienes other than vinyl norbornene. The elastomeric polymers containing vinyl norbornene generally have a branching index below 0.5. Such elastomeric polymers are combined with up to 30 parts of metallocene catalyzed ethylene, alpha-olefin copolymers to improve physical properties.
    Type: Grant
    Filed: December 10, 1996
    Date of Patent: June 9, 1998
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Narayanaswami Raja Dharmarajan, Periagaram Srinivasan Ravishankar, Charles Douglas Burrage
  • Electrical devices including ethylene, a-olefin, vinyl norbornene elastomeric polymers
    Patent number: 5674613
    Abstract: Elastomeric polymers including ethylene, alpha-olefin and vinyl norbornene are shown to have improved extrusion characteristics, improved electrical properties, improved cure characteristics compared to ethylene, alpha-olefin, non-conjugated diene elastomeric polymers containing non-conjugated dienes other than vinyl norbornene. The elastomeric polymers containing vinyl norbornene generally have a branching index below 0.5.
    Type: Grant
    Filed: June 14, 1995
    Date of Patent: October 7, 1997
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Narayanaswami Raja Dharmarajan, Periagaram S. Ravishankar