Patents by Inventor Serge Stefan Lievens

Serge Stefan Lievens 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).

  • Corrosion inhibitors and synergistic inhibitor combinations for the protection of light metals in heat-transfer fluids and engine coolants
    Patent number: 6676848
    Abstract: Corrosion protection of magnesium and aluminum alloys in engine coolants and heat-exchange fluids is achieved by the use of a select group of aliphatic and aromatic carboxylate acids or the alkaline metal, ammonium or amine salts thereof in combination with a fluoride and/or a fluorocarboxylic acid or salt thereof. These compositions have been found to significantly improve the high temperature magnesium corrosion protection properties of coolants, and are of use in automobile engine coolant systems.
    Type: Grant
    Filed: November 15, 2001
    Date of Patent: January 13, 2004
    Assignees: Texaco Inc., Texaco Development Corporation
    Inventors: Jean-Pierre Leopold Maes, Serge Stefan Lievens
  • Corrosion inhibitors and synergistic inhibitor combinations for the protection of light metals in heat-transfer fluids and engine coolants
    Patent number: 6398984
    Abstract: Corrosion protection of magnesium and aluminum alloys in engine coolants and heat-exchange fluids is achieved by the use of a select group of aliphatic and aromatic carboxylate acids or the alkaline metal, ammonium or amine salts thereof in combination with a fluoride and/or a fluorocarboxylic acid or salt thereof. These compositions have been found to significantly improve the high temperature magnesium corrosion protection properties of coolants, and are of use in automobile engine coolant systems.
    Type: Grant
    Filed: October 13, 1999
    Date of Patent: June 4, 2002
    Assignee: Texaco Inc.
    Inventors: Jean-Pierre Leopold Maes, Serge Stefan Lievens
  • Corrosion inhibitors and synergistic inhibitor combinations for the protection of light metals in heat-transfer fluids and engine coolants
    Publication number: 20020053655
    Abstract: Corrosion protection of magnesium and aluminum alloys in engine coolants and heat-exchange fluids is achieved by the use of a select group of aliphatic and aromatic carboxylate acids or the alkaline metal, ammonium or amine salts thereof in combination with a fluoride and/or a fluorocarboxylic acid or salt thereof. These compositions have been found to significantly improve the high temperature magnesium corrosion protection properties of coolants, and are of use in automobile engine coolant systems.
    Type: Application
    Filed: November 15, 2001
    Publication date: May 9, 2002
    Inventors: Jean-Pierre Leopold Maes, Serge Stefan Lievens