Patents by Inventor N. Raja Dharmarajan

N. 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).

  • Patent number: 7727638
    Abstract: The invention provides for a film including a layer made from a composition, the composition produced from 30 percent by weight or more of a first polymer component (FPC), wherein said FPC includes a copolymer of propylene and from 6 to 30 percent by weight of another alpha-olefin, and having a melting point derived from stereoregular polypropylene sequences, as determined by differential scanning calorimetry (DSC) of 105° C. or less, and a heat of fusion of 45 J/g or less; and a second polymer component (SPC); wherein the SPC includes a thermoplastic polymer other than the FPC.
    Type: Grant
    Filed: December 9, 2005
    Date of Patent: June 1, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: N. Raja Dharmarajan, Mike C. Bulawa, Sudhin Datta, Andy H. Tsou
  • Patent number: 7026403
    Abstract: The invention relates to a thermoplastic membrane (e.g. film, fluid barrier, and the like) which is formed from a blend of: a) a first polymer component (FPC), wherein said FPC comprises a propylene-ethylene copolymer containing from 80 to 93 percent by weight of units derived from propylene, and having a melting point derived from stereoregular polypropylene sequences, as determined by differential scanning calorimetry (DSC), in the range of from 25° C. to 70° C., and a heat of fusion of from 2 J/g to 25 J/g; b) an inorganic filler; c) a processing oil, and d) optionally, a second polymer component (SPC), wherein said SPC is a stereoregular polypropylene containing less than 7 percent by weight of units derived from ethylene or alpha-olefin monomer containing from 4 to 8 carbon atoms and having melting point, as determined by DSC, greater than 130° C., and a heat of fusion greater than 80 J/g.
    Type: Grant
    Filed: April 5, 2004
    Date of Patent: April 11, 2006
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: N. Raja Dharmarajan, Mike C. Bulawa, Sudhin Datta, Andy H. Tsou
  • Publication number: 20040198912
    Abstract: The invention relates to a thermoplastic membrane (e.g.
    Type: Application
    Filed: April 5, 2004
    Publication date: October 7, 2004
    Inventors: N. Raja Dharmarajan, Mike C. Bulawa, Sudhin Datta, Andy H. Tsou
  • Patent number: 6750284
    Abstract: The invention relates to a thermoplastic membrane (e.g. film, fluid barrier, and the like) which is formed from a blend of: a) a first polymer component (FPC), wherein said FPC comprises a propylene-ethylene copolymer containing from 80 to 93 percent by weight of units derived from propylene, and having a melting point derived from stereoregular polypropylene sequences, as determined by differential scanning calorimetry (DSC), in the range of from 25° C. to 70° C., and a heat of fusion of from 2 J/g to 25 J/g; b) an inorganic filler; c) a processing oil, and d) optionally, a second polymer component (SPC), wherein said SPC is a stereoregular polypropylene containing less than 7 percent by weight of units derived from ethylene or alpha-olefin monomer containing from 4 to 8 carbon atoms and having melting point, as determined by DSC, greater than 130° C., and a heat of fusion greater than 80 J/g.
    Type: Grant
    Filed: May 15, 2000
    Date of Patent: June 15, 2004
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: N. Raja Dharmarajan, Mike C. Bulawa, Sudhin Datta, Andy H. Tsou