Patents by Inventor Yvan Schwob

Yvan Schwob 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).

  • Conversion of carbon or carbon-containing compounds in a plasma
    Patent number: 6099696
    Abstract: A process for converting carbon or carbonated compounds in a plasma into carbons having a defined nanostructure consists of a reaction chamber whose head part contains three electrodes, a plasma gas supply, and a carbon or carbonated compound supply. A process for preparing carbons having a defined nanostructure. Apparatus to carry out the processes.
    Type: Grant
    Filed: October 13, 1995
    Date of Patent: August 8, 2000
    Assignees: Armines, Timcal Ltd.
    Inventors: Yvan Schwob, Francis Fischer, Laurent Fulcheri, Pierre Willemez
  • Complex composition resulting from the action of urea on a sulfuric sludge of petroleum origin, process for the preparation thereof and use thereof as a source of fertilizing material
    Patent number: 5470370
    Abstract: A complex composition formed by the product resulting from the action of urea on a sludge of petroleum origin containing by weight from 50 to 99% of sulfuric acid and from 1 to 20% of organic residues. The acid sludge may contain water and often comes from an alkylation reaction. This composition can be used as a source of fertilizing material or as a component of a fertilizing formulation.
    Type: Grant
    Filed: June 29, 1994
    Date of Patent: November 28, 1995
    Assignees: Institut Francais du Petrole, Transvalor
    Inventors: Daniel Lonchamp, Yvan Schwob
  • 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