Patents by Inventor Pierre Chabry

Pierre Chabry 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 lead arising especially from the active material of spent batteries, and electric furnace intended especially for the use of the process
    Patent number: 5467365
    Abstract: An electric furnace (containing an immersed electrode) and a process for the recovery of lead, arising especially from solid residues. Fines, which are a product of physically crushing spent batteries, are melted under not very reducing conditions in the presence of a small amount of carbon. This melting allows separating the crude lead and the lead-rich slag so as to remove sulphur in the form of sulphur dioxide and to optionally recover the crude lead. The lead-rich slag is then reduced with a suitable amount of carbon so as to separate the lead-free slag and the crude lead, which again can recovered.
    Type: Grant
    Filed: September 9, 1993
    Date of Patent: November 14, 1995
    Assignee: Metaleurop S.A.
    Inventors: Benoit Bied-Charreton, Pierre Chabry, Jacques Lecadet, Patrice Pasquier