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