Patents by Inventor Keith H. Sweeny

Keith H. Sweeny 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).

  • Treatment of reducible halohydrocarbon containing aqueous stream
    Patent number: 4382865
    Abstract: A new, economical system for removal of persistent reducible organic compounds from aqueous streams by passing the stream, preferably at or near neutral pH, into a bottom inlet to a column to provide fluidization of metal reductant catalyzed to provide efficient and economical reduction or dechlorination of a variety of pesticides and other compounds such as PCB or chloroform. The system is especially useful to reduce the level of soluble, reducible hydrocarbons in very dilute waste streams (1 ppm or less) generally by 99% or more.
    Type: Grant
    Filed: February 19, 1980
    Date of Patent: May 10, 1983
    Assignee: Envirogenics Systems Company
    Inventor: Keith H. Sweeny
  • Treatment of reducible hydrocarbon containing aqueous stream
    Patent number: 4219419
    Abstract: A new, economical system for removal of persistant reducible organic compounds from aqueous streams by passing the stream, preferably at or near neutral pH, through a column containing a metal reductant catalyzed to provide efficient and economical reduction or dechlorination of a variety of pesticides and other compounds such as PCB or chloroform. The system is especially useful to reduce the level of soluble, reducible hydrocarbons in very dilute waste streams (1 ppm or less) generally by 99% or more.
    Type: Grant
    Filed: September 14, 1978
    Date of Patent: August 26, 1980
    Assignee: Envirogenics Systems Company
    Inventor: Keith H. Sweeny