Patents by Inventor Douglas G. Rogers

Douglas G. Rogers 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 reducing the cyanide content of a solution
    Patent number: 5120451
    Abstract: A process for treatment of waste aqueous process streams from industrial process containing both cyanide ions and dissolved ammonia to reduce the cyanide content, comprising the consecutive steps: (a) adding a halogenating agent to the solution while maintaining the pH of the solution at greater then 7; (b) removing ammonia from the solution by aeration; (c) acidifying the solution to a pH of less then 7; (d) substantially neutralizing the solution; and (e) removing the ammonia from the solution by aeration.
    Type: Grant
    Filed: March 19, 1991
    Date of Patent: June 9, 1992
    Assignee: Minproc Technology Pty. Limited
    Inventors: Michael C. Costello, Douglas G. Rogers, Philip J. Guerney