Patents by Inventor Jean-Bernard Peudpiece

Jean-Bernard Peudpiece 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 the removal from gases of nitrogen oxides NOx by selective catalytic reduction (SCR) using ammonia over zeolite catalysts not causing the formation of nitrogen protoxide
    Patent number: 6221324
    Abstract: Zeolites partially exchanged with copper, in particular faujasites, in which the copper does not largely occupy the small cages (for example the sodalite cages of the faujasites), are used as non-nitrogen-protoxide-generating SCR catalysts. Particular attention is drawn to certain mixed rare-earth/copper zeolites. The selectivity of the reduction of NOx to N2 is correlated with the TPR diagram of the catalysts.
    Type: Grant
    Filed: October 30, 1998
    Date of Patent: April 24, 2001
    Assignee: Grand-Paroiesse S.A.
    Inventors: Bernard Coq, Gerard Delahay, Francois Fajulas, Bernard Neveu, Jean-Bernard Peudpiece, Stéphane Kieger
  • Process for the production of phospho-nitrogenous products and products thus obtained
    Patent number: 5409516
    Abstract: The method relates to the production of phospho-nitrogenous products soluble in neutral ammonium citrate and wherein free urea does not remain in significant amount in such products. Most of the free urea is involved in a ureic combination of calcium sulphate. Tricalcic phosphate is reacted with a reactant obtained by mixing sulfuric acid and urea. The process is particularly useful for the manufacture of fertilizers.
    Type: Grant
    Filed: September 15, 1993
    Date of Patent: April 25, 1995
    Assignees: Transvalor, Grande Paroisse S.A.
    Inventors: Patrick Achard, Pierre Ilbizian, Laurent Limousin, Bernard Neveu, Jean-Bernard Peudpiece, Yvan A. Schwob