Patents by Inventor Richard C. Swider

Richard C. Swider 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).

  • Measuring free acid concentration in solution
    Patent number: 5798268
    Abstract: A device for measuring free acid concentrations in a solution bearing an ionic constituent therein, forms a test sample of the solution and measures the concentration of the ionic constituent in solution in the test sample. The device measures conductivity of the test sample and calculates the concentration of free acid in the test sample based on the conductivity and the concentration of the ionic constituent in solution.
    Type: Grant
    Filed: September 20, 1996
    Date of Patent: August 25, 1998
    Assignee: Lakefield Research Ltd.
    Inventors: Richard C. Swider, Steven A. Webster
  • Controlled acid-strong acid strip process
    Patent number: 5419880
    Abstract: A controlled multi-stage process for the stripping of uranium includes the introduction at one end of a solvent extraction device a uranium loaded organic solution. A concentrated stripping acidic aqueous solution is introduced at the other end of the solvent extraction device so that the aqueous solution and the organic solution are contacted counter-currently in the solvent extraction device at a temperature not substantially exceeding 35.degree. C.
    Type: Grant
    Filed: October 8, 1993
    Date of Patent: May 30, 1995
    Assignee: Falconbridge, Ltd.
    Inventors: Richard C. Swider, Steven A. Webster