Patents by Inventor Pratip Sengupta

Pratip Sengupta 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).

  • PROCESS FOR PHYSICALLY FOAMING A MASTERBATCH
    Publication number: 20140155505
    Abstract: The invention is directed to a masterbatch comprising a nucleating organic compound which, on changing to the solid phase, forms crystals and which in its melt phase is soluble in the molten polyethylene and polyethylene. The ingredients of this masterbatch are applied as a nucleating agent masterbatch during the production of polyethylene foam.
    Type: Application
    Filed: October 18, 2013
    Publication date: June 5, 2014
    Applicant: SABIC BASIC INDUSTRIES CORPORATION
    Inventors: Pratip Sengupta, Roelof Franciscus Gerardus Maria de Vos, Johan Maria KRIST
  • Physically Blown Polyethylene Foam
    Publication number: 20110272620
    Abstract: The invention is directed to a masterbatch comprising a nucleating organic compound which, on changing to the solid phase, forms crystals and which in its melt phase is soluble in the molten polyethylene and polyethylene. The ingredients of this masterbatch are applied as a nucleating agent masterbatch during the production of polyethylene foam.
    Type: Application
    Filed: May 13, 2009
    Publication date: November 10, 2011
    Applicant: SAUDI BASIC INDUSTRIES CORPORATION
    Inventors: Roelof Franciscus Gerardus Maria De Vos, Johan Maria Krist, Pratip Sengupta
  • POLYETHYLENE FOAM
    Publication number: 20100196641
    Abstract: The invention is directed to polyethylene foam based on a blend comprising 95.5-99.5% by weight low density polyethylene and 0.5-4.5% by weight high density polyethylene and a nucleating agent. The invention is also directed to a process for physical foaming of a blend comprising 95.5-99.5% by weight low density polyethylene and 0.5-4.5% by weight high density polyethylene in the presence of a physical blowing agent and a nucleating agent.
    Type: Application
    Filed: May 16, 2008
    Publication date: August 5, 2010
    Applicant: SAUDI BASIC INDUSTRIES CORPORATION
    Inventors: Roelof Franciscus Gerardus Maria De Vos, Pratip Sengupta, Johan Maria Krist, Hendrikus Pieter Ruinaard