Patents by Inventor Serge Gossett

Serge Gossett 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).

  • Solution and process for the chemical conversion of metal substrates
    Patent number: 4474626
    Abstract: Acid solution for the chemical conversion of metallic substrates, comprising:a polyphosphate, soluble in water and of the formula (X PO.sub.3).sub.n in which n.gtoreq.3 and in which X is an alkali, alkaline earth metal or ammonium,an organic chelating agent and the zinc ion,the pH being brought to the desired value by means of an inorganic acid selected from the group comprising sulphuric hydrochloric and nitric acid.
    Type: Grant
    Filed: August 1, 1983
    Date of Patent: October 2, 1984
    Assignee: Roquette Freres
    Inventors: Jean-Claude Lumaret, Serge Gossett, Didier Boulinguiez