Patents by Inventor Nathalie Cerqueda

Nathalie Cerqueda 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: 5725610
    Abstract: Additive composition enhancing the low temperature operability of average distillates beyond -20.degree. C. comprising at least 40% by weight of a composition consisting of: i) from 60 to 94% by weight of an antisedimentation additive resulting from the reaction of at least one aliphatic dicarboxylic compound and one polyamine of general formula (II) wherein R is a saturated aliphatic radical comprising from 1 to 32 carbon atoms, n is 2-4 and m is 1-4; and ii) 6-40 % by weight of a dispersing-stabilizing additive having a molecular weight varying from 15000 to 50000 resulting from the esterification reaction of a linear alcohol having from 6 to 24 atoms with an organic acid such as maleic acid and its halides, the ester obtained being polymerized with itself or a copolymerizing compound selected from aliphatic dicarboxylic compounds.
    Type: Grant
    Filed: August 13, 1996
    Date of Patent: March 10, 1998
    Assignees: Elf Antar France, Henkel Kommanditgesellschaft Auf Aktien
    Inventors: Despina Vassilakis, Robert Leger, Nathalie Cerqueda, Wolfgang Ritter, Thomas Reichert, Stephan von Tapavicza