Patents by Inventor Kanthi S. Wijesekera

Kanthi S. Wijesekera 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).

  • Lubrication oil compositions
    Patent number: 8703681
    Abstract: Provided are lubrication oil compositions. The compositions contain certain acid esters (monoesters and/or diesters) of polytrimethylene ether glycol, certain additives, and optionally a polytrimethylene ether glycol, and the use of such compositions as lubrication oils.
    Type: Grant
    Filed: December 21, 2010
    Date of Patent: April 22, 2014
    Assignee: E I du Pont de Nemours and Company
    Inventors: Matthew Arthur Page, Hari Babu Sunkara, Kanthi S. Wijesekera
  • LUBRICATION OIL COMPOSITIONS
    Publication number: 20120004152
    Abstract: Provided are lubrication oil compositions. The compositions contain certain acid esters (monoesters and/or diesters) of polytrimethylene ether glycol, certain additives, and optionally a polytrimethylene ether glycol, and the use of such compositions as lubrication oils.
    Type: Application
    Filed: December 21, 2010
    Publication date: January 5, 2012
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Matthew Arthur Page, Hari Babu Sunkara, Kanthi S. Wijesekera
  • LUBRICATION OIL COMPOSITIONS
    Publication number: 20090054283
    Abstract: This invention relates to lubrication oil compositions comprising (i) a base fluid stock comprising (a) a PO3G fluid (a polytrimethylene ether glycol that is a fluid at ambient temperature) and (b) a PO3G ester fluid (an ester of a polytrimethylene ether glycol that is a fluid at ambient temperature), and (ii) one or more fuel oil additives.
    Type: Application
    Filed: August 21, 2008
    Publication date: February 26, 2009
    Applicant: E.I. duPont de Nemours and Company
    Inventors: Matthew Arthur Page, Hari Babu Sunkara, Kanthi S. Wijesekera
  • LUBRICATION OIL COMPOSITIONS
    Publication number: 20090054280
    Abstract: This invention relates to compositions comprising (i) a base fluid stock comprising (a) a PTEEG fluid (a poly(trimethylene-ethylene ether)glycol that is a fluid at ambient temperature) and (b) an additive package comprising certain specified additive combinations, and lubrication oils containing the compositions.
    Type: Application
    Filed: August 21, 2008
    Publication date: February 26, 2009
    Applicant: E.I. duPont de Nemours and Company
    Inventors: Hari Babu Sunkara, Kanthi S. Wijesekera
  • Epoxidation process
    Patent number: 5621122
    Abstract: A crystalline molecular sieve having a framework structure isomorphous with zeolite beta and containing Si and Ti, but essentially no framework Al, usefully catalyzes olefin epoxidation wherein hydrogen peroxide or an organic hydroperoxide is utilized as the oxidizing agent.
    Type: Grant
    Filed: April 11, 1995
    Date of Patent: April 15, 1997
    Assignee: ARCO Chemical Technology, L.P.
    Inventors: Robert J. Saxton, John G. Zajacek, Guy L. Crocco, Kanthi S. Wijesekera
  • Method of making a titanium-containing molecular sieve
    Patent number: 5527520
    Abstract: A crystalline molecular sieve having a framework structure isomorphous with zeolite beta and containing Si and Ti, but essentially no framework Al, usefully catalyzes olefin epoxidation wherein hydrogen peroxide or an organic hydroperoxide is utilized as the oxidizing agent.
    Type: Grant
    Filed: April 11, 1995
    Date of Patent: June 18, 1996
    Assignee: ARCO Chemical Technology, L. P.
    Inventors: Robert J. Saxton, John G. Zajacek, Guy L. Crocco, Kanthi S. Wijesekera