Patents by Inventor Cécile Thomazeau

Cécile Thomazeau 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).

  • Process for multistage conversion of a charge comprising olefins with four, five or more carbon atoms, with the aim of producing propylene
    Patent number: 7262332
    Abstract: The invention relates to a process for production of propylene in particular from a C4 and/or C5 cut from steam cracking and/or catalytic cracking, preferably comprising both butenes and pentenes, said process comprising at least one oligomerization stage, followed by a stage of catalytic cracking of the oligomers formed. Preliminary oligomerization, in particular of a wide fraction of the charge, makes it possible to optimize the yields, the conversion, and the selectivity for propylene, relative to direct cracking. It also makes it possible for cracking to be carried out in a fixed, moving, or fluidized bed, optionally with co-production of oligomers for uses other than the production of propylene.
    Type: Grant
    Filed: March 6, 2003
    Date of Patent: August 28, 2007
    Assignee: Institut Francais du Petrole
    Inventors: Jean-Luc Duplan, Jérôme Bayle, Sylvie Lacombe, Cécile Thomazeau