Patents by Inventor Dixit Parmar

Dixit Parmar 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: 12168757
    Abstract: The present invention provides, among other things, a process to produce a low molecular weight dispersant polymethacrylate polymer (“LMWDPMA”), and the LMWDPMA itself, along with the use of the LMWDPMA in a lubricating composition, as well as a method for lubricating an internal combustion engine as disclosed herein.
    Type: Grant
    Filed: May 7, 2021
    Date of Patent: December 17, 2024
    Assignees: The Lubrizol Corporation, University of Warwick
    Inventors: Paul O'Hora, Dixit Parmar, Timothy R. Smith, David M. Haddleton, Georgios Patias
  • Publication number: 20240336710
    Abstract: Provided is a process for producing a reaction product, the process comprising reacting polyisobutylene with a radical initiator and an ethylenically unsaturated acylating agent at a reaction temperature of from 150° C. to 225° C. to produce the reaction product, wherein the polyisobutylene is brought to the reaction temperature prior to addition of the radical initiator; and wherein the ethylenically unsaturated acylating agent is added at any time prior to or during addition of the radical initiator.
    Type: Application
    Filed: August 5, 2022
    Publication date: October 10, 2024
    Inventors: Philip W. Pike, Dixit Parmar, Nicolas Proust, Binbin Guo, John R. Johnson, Amy L. Short, Allison M. Williamson, Joshua Armbrecht, Patrick Newby, Kurt F. Wollenberg
  • Publication number: 20230183595
    Abstract: The present invention provides, among other things, a process to produce a low molecular weight dispersant polymethacrylate polymer (“LMWDPMA”), and the LMWDPMA itself, along with the use of the LMWDPMA in a lubricating composition, as well as a method for lubricating an internal combustion engine as disclosed herein.
    Type: Application
    Filed: May 7, 2021
    Publication date: June 15, 2023
    Applicants: The Lubrizol Corporation, University of Warwick
    Inventors: Paul O'Hora, Dixit Parmar, Timothy R. Smith, David M. Haddleton, Georgios Patias
  • Patent number: 11421174
    Abstract: The disclosed technology relates to a dispersant composition comprising the reaction product of a polyolefin acylating agent and a polyamine having a sterically hindered head group. In addition, the technology relates to lubricating compositions containing the dispersant composition and an oil of lubricating viscosity, as well as methods of employing the lubricating composition in an engine and engine oils. Lubricating oils containing the dispersants of the disclosed technology simultaneously achieves seal compatibility, wear, deposit, varnish and corrosion control while also maintaining fuel economy performance over a broad temperature range.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: August 23, 2022
    Assignee: The Lubrizol Corporation
    Inventors: Dixit Parmar, Joanne L. Jones, Daniel J. Saccomando, Nicolas Proust, Patrick E. Mosier
  • Publication number: 20200369974
    Abstract: The disclosed technology relates to a dispersant composition comprising the reaction product of a polyolefin acylating agent and a polyamine having a sterically hindered head group. In addition, the technology relates to lubricating compositions containing the dispersant composition and an oil of lubricating viscosity, as well as methods of employing the lubricating composition in an engine and engine oils. Lubricating oils containing the dispersants of the disclosed technology simultaneously achieves seal compatibility, wear, deposit, varnish and corrosion control while also maintaining fuel economy performance over a broad temperature range.
    Type: Application
    Filed: November 29, 2018
    Publication date: November 26, 2020
    Applicant: The Lubrizol Corporation
    Inventors: Dixit Parmar, Joanne L. Jones, Daniel J. Saccomando, Nicolas Proust, Patrick E. Mosier