Patents by Inventor William J. McDowell

William J. McDowell 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).

  • Solvent composition and process for the isolation of radium
    Patent number: 4917825
    Abstract: A solvent extraction composition for radium including a high molecular wet organophilic carboxylic acid and an organophilic macrocycle dissolved in a suitable solvent.
    Type: Grant
    Filed: October 5, 1988
    Date of Patent: April 17, 1990
    Assignee: The United States of America, as represented by the Department of Energy
    Inventors: William J. McDowell, Gerald N. Case
  • Salt-soda sinter process for recovering aluminum from fly ash
    Patent number: 4254088
    Abstract: A method for recovering aluminum values from fly ash comprises sintering the fly ash with a mixture of NaCl and Na.sub.2 CO.sub.3 to a temperature in the range 700.degree.-900.degree. C. for a period of time sufficient to convert greater than 90% of the aluminum content of the fly ash into an acid-soluble fraction and then contacting the thus-treated fraction with an aqueous solution of nitric or sulfuric acid to effect dissolution of aluminum and other metal values in said solution.
    Type: Grant
    Filed: March 27, 1979
    Date of Patent: March 3, 1981
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: William J. McDowell, Forest G. Seeley
  • Recovery of aluminum and other metal values from fly ash
    Patent number: 4252777
    Abstract: The invention described herein relates to a method for improving the acid leachability of aluminum and other metal values found in fly ash which comprises sintering the fly ash, prior to acid leaching, with a calcium sulfate-containing composition at a temperature at which the calcium sulfate is retained in said composition during sintering and for a time sufficient to quantitatively convert the aluminum in said fly ash into an acid-leachable form.
    Type: Grant
    Filed: November 1, 1979
    Date of Patent: February 24, 1981
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: William J. McDowell, Forest G. Seeley
  • Process for removal of mineral particulates from coal-derived liquids
    Patent number: 4191628
    Abstract: Suspended mineral solids are separated from a coal-derived liquid containing the solids by a process comprising the steps of: (a) contacting said coal-derived liquid containing solids with a molten additive having a melting point of 100.degree.-500.degree. C. in an amount of up to 50 wt.
    Type: Grant
    Filed: October 12, 1978
    Date of Patent: March 4, 1980
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventor: William J. McDowell
  • Liquid film target impingement scrubber
    Patent number: 4012209
    Abstract: An improved liquid film impingement scrubber is provided wherein particulates suspended in a gas are removed by jetting the particle-containing gas onto a relatively small thin liquid layer impingement target surface. The impingement target is in the form of a porous material which allows a suitable contacting liquid from a pressurized chamber to exude therethrough to form a thin liquid film target surface. The gas-supported particles collected by impingement of the gas on the target are continuously removed and flushed from the system by the liquid flow through each of a number of pores in the target.
    Type: Grant
    Filed: April 5, 1976
    Date of Patent: March 15, 1977
    Assignee: The United States of America as represented by the United States Energy Research and Development Administration
    Inventors: William J. McDowell, Charles F. Coleman