Patents by Inventor Pierre Ilbizian

Pierre Ilbizian 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 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