Patents by Inventor Raymond G. Saxton

Raymond G. Saxton 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).

  • Polymer blends and their application as viscosity index improvers
    Patent number: 6753381
    Abstract: The present invention relates to a polymer blend containing a high ethylene content ethylene-propylene copolymer and a lower ethylene content ethylene-propylene copolymer. The polymer blend of the present invention is useful for the preparation of viscosity index improvers with improved lower temperature properties relative to conventional viscosity index improvers.
    Type: Grant
    Filed: March 15, 2002
    Date of Patent: June 22, 2004
    Assignee: Ethyl Corporation
    Inventors: Munmaya K. Mishra, Raymond G. Saxton, Luis C. Salazar, Gary J. Spedale
  • Polymer blends and their application as viscosity index improvers
    Publication number: 20030176579
    Abstract: The present invention relates to a polymer blend containing a high ethylene content ethylene-propylene copolymer and a lower ethylene content ethylene-propylene copolymer. The polymer blend of the present invention is useful for the preparation of viscosity index improvers with improved lower temperature properties relative to conventional viscosity index improvers.
    Type: Application
    Filed: March 15, 2002
    Publication date: September 18, 2003
    Inventors: Munmaya K. Mishra, Raymond G. Saxton, Luis C. Salazar, Gary J. Spedale
  • Pour point depressants via anionic polymerization of (meth)acrylic monomers
    Patent number: 5834408
    Abstract: The present invention relates to the product(s) of the polymerization of specific combinations of acrylic monomers, and optionally vinyl and/or performance enhancing comonomers, in the presence of an anionic initiator to form copolymers having a narrow molecular weight distribution. Additionally, the invention relates to the use of these copolymers as pour point depressants in lubricating oil formulations.
    Type: Grant
    Filed: October 24, 1997
    Date of Patent: November 10, 1998
    Assignee: Ethyl Corporation
    Inventors: Munmaya K. Mishra, Raymond G. Saxton