Patents by Inventor Richard A. Dobbs

Richard A. Dobbs 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).

  • Ligand exchange process for removal of ammonia
    Patent number: 3948769
    Abstract: The selective removal of ammonia from waste water is achieved by the use of a ligand exchanger which has been conditioned with a salt of a metal which is capable of forming a complex with ammonia. The ligand exchanger is regenerated by contacting it with low pressure steam.
    Type: Grant
    Filed: April 8, 1974
    Date of Patent: April 6, 1976
    Assignee: The United States of America as represented by the United States Environmental Protection Agency
    Inventor: Richard A. Dobbs