Patents by Inventor Jean C. Auclair

Jean C. Auclair 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).

  • Semi-continuous bacterial leaching process
    Patent number: 5454948
    Abstract: The present invention relates to a semi-continuous process for removing heavy metals, substantially reducing volatile suspended solids and substantially destroying indicator bacteria from municipal sludges, which comprises: a) adding 1 to 3 g of sulphur per liter to a volume of municipal sludge and allowing the sulphur oxidizing thiobacilli initially present in said sludge to proliferate under aerobic conditions in said sludge being agitated until the pH of said sludge is lowered to about 1.5 to 2.
    Type: Grant
    Filed: August 23, 1993
    Date of Patent: October 3, 1995
    Assignee: Institut National de la Recherche Scientifique
    Inventors: Rajeshwar D. Tyagi, Jean-Francois Blais, Jean C. Auclair