Patents by Inventor Christian Dupraz

Christian Dupraz 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).

  • Production of propylene employing dimerising ethylene to 1-butene, hydroisomerization to 2-butene and metathesis by ethylene
    Patent number: 7868216
    Abstract: A process for producing high purity propylene comprises: a step for dimerizing ethylene to 1-butene; a step for hydroisomerizing 1-butene to 2-butenes; and a step for metathesis of 2-butenes by ethylene. Advantageously, the ethylene used to produce the 1-butene and ethylene for metathesis derive from a steam cracking unit. To increase propylene production, the process can use a steam cracking or FCC C4cut as an additional butene source.
    Type: Grant
    Filed: December 23, 2005
    Date of Patent: January 11, 2011
    Assignee: IFP Energies Nouvelles
    Inventors: Jean-Alain Chodorge, Christian Dupraz
  • Production of propylene employing dimerising ethylene to 1-butene, hydroisomerization to 2-butene and metathesis by ethylene
    Publication number: 20060161033
    Abstract: A process for producing high purity propylene comprises: a step for dimerizing ethylene to 1-butene; a step for hydroisomerizing 1-butene to 2-butenes; and a step for metathesis of 2-butenes by ethylene. Advantageously, the ethylene used to produce the 1-butene and ethylene for metathesis derive from a steam cracking unit. To increase propylene production, the process can use a steam cracking or FCC C4 cut as an additional butene source.
    Type: Application
    Filed: December 23, 2005
    Publication date: July 20, 2006
    Inventors: Jean-Alain Chodorge, Christian Dupraz