Patents by Inventor Ramesh Rengarajan

Ramesh Rengarajan 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).

  • Filler masterbatch for thermoplastic compositions
    Publication number: 20050250890
    Abstract: The present invention relates to a filler masterbatch composition comprised of a polymer selected from an impact polypropylene, a high density polyethylene, and a polyolefin elastomer and a mineral filler and a filled thermoplastic composition produced by combining such a filer masterbatch composition with a polymer. The inventive filler masterbatch allows for a higher compounding rate, better dispersion, and elimination of a typical compounding step in the production of filled thermoplastic compositions.
    Type: Application
    Filed: May 5, 2005
    Publication date: November 10, 2005
    Inventors: Yan Chen, John Myles, Ramesh Rengarajan, Bill Sparhawk
  • Flame initiated graft polymerization
    Patent number: 5571869
    Abstract: Grafted polymer particles are prepared by a free-radical addition polymerization mechanism using a flame produced by igniting a mixture of a combustible gas and an oxidant to heat at least a portion of the surface of a solid polymer particle to produce free-radicals thereon. At least one polymerizable ethylenically unsaturated monomer is contacted and reacted with the free-radicals formed on the surface of the polymer to form a graft thereon.
    Type: Grant
    Filed: April 25, 1995
    Date of Patent: November 5, 1996
    Assignee: The University of Akron
    Inventors: Sunggyu Lee, Ramesh Rengarajan
  • Polymerization process and the polymers thereof
    Patent number: 5079302
    Abstract: A catalytic process for free radically induced polymerization and graft copolymerization of a free radically polymerizable monomer onto a compound in the presence of a free radical initiator, an organic catalyst and in the presence or absence of an organic diluent where the organic catalyst is an alkenyl substituted cyanurate or isocyanurate and composition thereof.
    Type: Grant
    Filed: January 19, 1990
    Date of Patent: January 7, 1992
    Assignee: University of Akron
    Inventors: Sunggyu Lee, Ramesh Rengarajan
  • Flame-retardant polyolefin compositions containing exudation inhibitor and process for producing same
    Patent number: 4699734
    Abstract: The invention relates to base polyolefin compositions, and concentrates thereof adapted to be let down or diluted by addition of further polyolefin, flameproofed by incorporation therein of an organohalo flame-retardant and a metal oxide or sulfide synergist, are rendered resistant to exudation by incorporating therein the combination of an epoxy resin, an elastomeric resin, and a nucleating agent, the epoxy resin being present in an amount of from about 0.01 to about 10 percent, the elastomeric resin being present in an amount of from about 0.1 to about 20 percent, and the nucleating agent being present in an amount of from about 0.1 to about 10 percent and non-fogging molded products obtained thereby.
    Type: Grant
    Filed: November 6, 1985
    Date of Patent: October 13, 1987
    Assignee: A. Schulman, Inc.
    Inventors: Shirley N. Kendall, Ramesh Rengarajan