Patents by Inventor Fran.cedilla.ois Desprez

Fran.cedilla.ois Desprez 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 bleaching a pulp in a sequence including an enzyme stage
    Patent number: 5645686
    Abstract: Process for bleaching a chemical paper pulp by means of a sequence of treatment stages involving at least one stage with an enzyme and at least one stage with a peroxyacid.
    Type: Grant
    Filed: October 13, 1994
    Date of Patent: July 8, 1997
    Assignee: Solvay Interox (Societe Anonyme)
    Inventors: Nicholas A. Troughton, Fran.cedilla.ois Desprez, Johan Devenyns, Pierre Ledoux, Rene Detroz