Patents by Inventor Sergio Leon DE ROOY

Sergio Leon DE ROOY 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).

  • Lubricating composition
    Patent number: 10913916
    Abstract: Lubricating composition comprising (i) base oil and (ii) a metal-free phosphonate compound having the general formula P(?O)(R1)(OR2)(OR3) wherein R1, R2 and R3 are the same or different and each independently selected from a straight chain or branched, saturated or unsaturated, C4-C22 alkyl group. The lubricating composition of the present invention provides improved engine durability, improved wear and friction reduction, improved fuel economy and excellent oxidative stability.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: February 9, 2021
    Assignee: Shell Oil Company
    Inventors: Sergio Leon De Rooy, Mark Clift Southby
  • LUBRICATING COMPOSITION
    Publication number: 20170335225
    Abstract: Lubricating composition comprising (i) base oil and (ii) a metal-free phosphonate compound having the general formula P(?O)(R1)(OR2)(OR3) wherein R1, R2 and R3 are the same or different and each independently selected from a straight chain or branched, saturated or unsaturated, C4-C22 alkyl group. The lubricating composition of the present invention provides improved engine durability, improved wear and friction reduction, improved fuel economy and excellent oxidative stability.
    Type: Application
    Filed: October 30, 2015
    Publication date: November 23, 2017
    Inventors: Sergio Leon DE ROOY, Mark Clift SOUTHBY