Patents by Inventor M. Quamrul Ahsan

M. Quamrul Ahsan 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 removal of cyanide from wastewaters
    Patent number: 4966715
    Abstract: A process is disclosed for the detoxification of effluents containing cyanide by treating with a mixture of hydrogen peroxide and phosphoric acid.
    Type: Grant
    Filed: May 19, 1989
    Date of Patent: October 30, 1990
    Assignee: Degussa Aktiengesellschaft
    Inventors: M. Quamrul Ahsan, Andrew Griffiths, Ernest Haug, Roy Norcross
  • Process for the treatment of effluents containing cyanide and other oxidizable substances
    Patent number: 4915849
    Abstract: Treatment of effluent containing cayanide is disclosed wherein a mixture of H.sub.2 SO.sub.4 and H.sub.2 O.sub.2 with between 0.01 and 0.5 moles of H.sub.2 SO.sub.4 per mole of H.sub.2 O.sub.2 is used.
    Type: Grant
    Filed: August 17, 1988
    Date of Patent: April 10, 1990
    Assignee: Degussa Aktiegesellschaft
    Inventors: Andrew Griffiths, M. Quamrul Ahsan, Roy Norcross, Helmut Knorre, Friedrich W. Merz