Patents by Inventor Gilles Paillassa

Gilles Paillassa 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 manufacturing 5-hydroxymethylfurfural
    Patent number: 4590283
    Abstract: The invention relates to a process for manufacturing 5-hydroxymethylfurfural consisting of bringing a hexose into contact with a catalytic support in the form of a solution of said hexose in a strongly polar aprotic solvent, particularly dimethylsulfoxide, the 5-hydroxymethylfurfural formed being extracted by means of a solvent for the latter also brought into contact with the catalytic support. All of the operations are carried out preferably continuously, particularly by the counter-current principle.
    Type: Grant
    Filed: September 14, 1984
    Date of Patent: May 20, 1986
    Assignee: Roquette Freres
    Inventors: Antoine Gaset, Luc Rigal, Gilles Paillassa, Jean-Paul Salome, Guy Fleche