Patents by Inventor David Kisling Kennedy

David Kisling Kennedy 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).

  • Color removal from effluent waters
    Patent number: 5766485
    Abstract: Alum process residues (APR) are used to remove colored contaminants from waste waters. In addition, in accordance with the invention, up to 0.1% by weight of alum and up to 5 ppm of a polyelectrolyte polymer is added to improve color removal, turbidity removal and the settling rate. The resultant APR-alum-polymer mixture together with contaminants in the waste water settles rapidly, reducing the costs of the color removal process.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: June 16, 1998
    Assignee: General Chemical Corporation
    Inventors: Christopher Bruce Lind, David Kisling Kennedy