Patents by Inventor Manas Chanda

Manas Chanda 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).

  • Oxidation of polythionates
    Patent number: 4582690
    Abstract: Thiosalts contained in waste streams are oxidized to sulfate ions in the presence of sulfur-bound copper. Air oxidation of the waste stream is effected in a slurry of the copper compound, which may be CuS, Cu.sub.2 S or chalcopyrite, and continuous long term operation is possible without loss of catalytic activity and without catalyst degradation.
    Type: Grant
    Filed: August 6, 1984
    Date of Patent: April 15, 1986
    Assignee: University of Waterloo
    Inventors: Garry L. Rempel, Manas Chanda