Patents by Inventor Francis GIVRON

Francis GIVRON 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 RECOVERY OF PRECIOUS METALS FROM USED AND/OR DEFECTIVE CATALYTIC CARRIERS
    Publication number: 20110028306
    Abstract: Process for recovering precious metals from catalytic carriers comprising at least the following stages: Stage 1: treatment of the carriers with at least one aqueous composition Stage 2: treatment of the carriers with an acid solution containing at least sulphuric acid but weak in nitric acid Stage 3: treatment of the carriers with an acid solution containing nitric acid and hydrochloric acid.
    Type: Application
    Filed: July 30, 2010
    Publication date: February 3, 2011
    Applicant: G.E. CONSEILS SPRL
    Inventors: Daniel VARIABEL, Francis GIVRON