Patents by Inventor Philip E. Burke

Philip E. Burke 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).

  • Recovery of phosphorus and aluminum from spent acid from the bright-dip aluminum finishing process
    Patent number: 4565680
    Abstract: In the process of the invention spent phosphoric acid is concentrated and stripped with air to a greater than 50% P.sub.2 O.sub.5 concentration to remove nitric acid. As a result of concentrating the spent acid a portion of the aluminum precipitates as monoaluminum phosphate, which is recovered by filtration. The filtrate is then ammoniated to produce a monoammonium phosphate solution. The solids precipitated during ammoniation and comprising aluminum ammonium phosphate which contains other metal phosphates are washed and reacted with aqueous ammonia to form diammonium phosphate.
    Type: Grant
    Filed: January 14, 1985
    Date of Patent: January 21, 1986
    Assignee: Stauffer Chemical Company
    Inventors: Lanny E. Todd, Philip E. Burke, Danny L. Smith, Carla T. Gleason