Patents by Inventor Hervé Bres

Hervé Bres 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).

  • Preparation of metallic dihydroxybenzene-disulfonates
    Patent number: 8263803
    Abstract: Metallic dihydroxybenzenedisulfonates are prepared, preferably from alkaline metals, from corresponding dihydroxybenzenedisulfonic acids, by reacting the dihydroxybenzenedisulfonic acid present in a sulfuric medium with an adequate amount of a salt including a sulfate or hydrogenosulfate anion.
    Type: Grant
    Filed: June 12, 2007
    Date of Patent: September 11, 2012
    Assignee: Rhodia Operations
    Inventors: Michel Dury, Hervé Bres
  • PREPARATION OF METALLIC DIHYDROXYBENZENEDISULFONATES
    Publication number: 20100056823
    Abstract: Metallic dihydroxybenzenedisulfonates are prepared, preferably from alkaline metals, from corresponding dihydroxybenzenedisulfonic acids, by reacting the dihydroxybenzenedisulfonic acid present in a sulfuric medium with an adequate amount of a salt including a sulfate or hydrogenosulfate anion.
    Type: Application
    Filed: June 12, 2007
    Publication date: March 4, 2010
    Applicant: Rhodia Operations
    Inventors: Michel Dury, Hervé Bres
  • Process for the purification of peptides
    Patent number: 4935526
    Abstract: A process for the purification and extraction of the dipeptide .epsilon.-tri-fluoroacetyllysylproline from a saturated aqueous solution of salt containing the dipeptide, at least one polypeptide and at least one isolated amino acid, by a series of successive extractions with a primary alcohol or a primary alcohol/aprotic solvent mixture.
    Type: Grant
    Filed: April 5, 1989
    Date of Patent: June 19, 1990
    Assignee: Rhone-Poulenc Chimie
    Inventors: Herve Bres, Christian Gervais, Jean-Pierre Casati
  • Process for the preparation of n-sulphonyl-n-(phosphonomethylglycyl) amines
    Patent number: 4868269
    Abstract: Preparation of compounds with herbicidal properties, of formula ##STR1## wherein R.sup.1 represents a hydrocarbon radical;R represents a hydrogen atm or a hydrocarbon radical; andR.sup.22 represents a hydrogen atom, an aryl radical, or a substituted aryl radical,said process being characterized in that hydrogenation of compounds of formula ##STR2## wherein R, R.sup.1 and R.sup.22 have the same meaning as in formula (IIa), R.sup.32 represents an aryl radical, or substituted aryl radical, and R.sup.4 represents a hydrogen atom or an R.sup.8 group which can be hydrogenolyzed, is carried out.
    Type: Grant
    Filed: December 4, 1986
    Date of Patent: September 19, 1989
    Assignee: Rhone-Poulenc Agrochimie
    Inventor: Herve' Bres