Patents by Inventor David H. Wasserstrom

David H. Wasserstrom 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).

  • Reduction of sodium/ammonium alkalinity in industrial wastewater
    Patent number: 4595508
    Abstract: Industrial wastewater is contacted with a weak acid cation exchange resin, in the hydrogen ion form, to substantially reduce the sodium and ammonium alkalinity levels rendering the wastewater suitable, for example, as an environmentally acceptable cooling medium.
    Type: Grant
    Filed: May 7, 1984
    Date of Patent: June 17, 1986
    Assignee: Exxon Research and Engineering Co.
    Inventors: Edward I. Wolfe, David H. Wasserstrom, Richard Kilpert