Patents by Inventor Christophe Bressot

Christophe Bressot 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).

  • Crown calix[4]arenes, method of preparation and use for selective extraction of caesium
    Patent number: 6156282
    Abstract: The invention relates to new calixarenes of formula: ##STR1## in which R.sup.1 represents a crown ether chain that includes at least two aryl or cycloalkyl rings,R.sup.2 is a hydroxyl or alkoxy group, or the two R.sup.2 groups together form a crown ether chain such as R.sup.1, and R.sup.3 represents a hydrogen atom or an alkyl group. The calixarenes are used to selectively extract caesium from aqueous solutions that notably have high concentrations of sodium.
    Type: Grant
    Filed: January 27, 1999
    Date of Patent: December 5, 2000
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Jean-Fran.cedilla.ois Dozol, Veronique Lamare, Christophe Bressot, Rocco Ungaro, Alessandro Casnati, Jacques Vicens, Zouhair Asfari