Patents by Inventor Bernard Nocher

Bernard Nocher 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).

  • Method for regenerating a catalyst with a sulphurus active phase and contaminated by a mercury compound
    Patent number: 6100210
    Abstract: The invention features a method for treating a supported catalyst with a sulphur compound based active phase and a mercury compound contaminated mineral support. This method consists in implementing the following steps: the said catalyst is contacted with a basic aqueous solution of at least one sulphide selected among alkaline metal sulphides, alkaline-earth metal sulphides or ammonium sulphide; then the catalyst is separated from the basic aqueous solution. At the end of this process, the treated catalyst shows the same characteristics as before its contamination by mercury.
    Type: Grant
    Filed: March 26, 1999
    Date of Patent: August 8, 2000
    Assignee: Procatalyse
    Inventors: James Ollivier, Pierre Le Cloirec, Jean-Paul Bournonville, Bernard Nocher
  • Regeneration of spent As-poisoned lead catalysts
    Patent number: 5942458
    Abstract: Spent lead catalysts containing contaminating amounts of arsenic values, e.g., mixed oxides of lead and arsenic, are regenerated and rendered suitable for reuse by heat-treating same at a temperature of at least 550.degree. C. in the presence of a gas mixture which comprises an inert gas, e.g., Ar, N.sub.2 or He, and at least 2% by volume of at least one reducing gas, e.g., H.sub.2, CO or CH.sub.4.
    Type: Grant
    Filed: August 12, 1997
    Date of Patent: August 24, 1999
    Assignee: Procatalyse
    Inventors: Paul Berthier, Jean-Paul Bournonville, Christian Ladirat, Bernard Nocher