Patents by Inventor Paul Desclaux

Paul Desclaux 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).

  • Controlling AlF.sub.3 addition to Al reduction cell electrolyte
    Patent number: 4668350
    Abstract: A method for controlling the rate of aluminum fluoride addition to a cryolite-based electrolyte of an aluminum electrolytic reduction cell makes use of the known ratio between cell temperature and bath (NaF:AlF.sub.3) ratio. A target temperature is established corresponding to a target bath ratio. The cell temperature is measured at intervals and the rate of AlF.sub.3 addition altered depending on whether the measured temperature is above or below the target temperature. The method is faster than traditional methods involving analysis of electrolyte samples, and is amendable to computer control.
    Type: Grant
    Filed: March 17, 1986
    Date of Patent: May 26, 1987
    Assignee: Alcan International Limited
    Inventors: Paul Desclaux, Jean-Paul R. Huni