Patents by Inventor Guy Barreau

Guy Barreau 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 preparing metallic mercury from calomel
    Patent number: 5071475
    Abstract: The invention provides a process and an installation for producing mercury by reduction of calomel by implementing a process for preparing metallic mercury, said installation essentially comprising: a reaction vessel with an inclined base for the reduction provided with an agitator, connected by a conduit to said decanter and provided with water supply means and sulfuric acid supply means, and a mercury recovery tank connected to the lower part of the reaction vessel.
    Type: Grant
    Filed: August 24, 1990
    Date of Patent: December 10, 1991
    Assignee: Vieille-Montagne France S.A.
    Inventors: Guy Barreau, Claude Eusebe