Patents by Inventor Stephen A. Yuhas, Jr.

Stephen A. Yuhas, Jr. 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).

  • Removal of phenols from water
    Patent number: 4575568
    Abstract: In a process for purification of wastewater streams containing phenolic impurities wherein the wastewater stream is contacted with an ether extraction solvent for the extractive removal of the phenolic impurities, to form an ether extract phase containing at least a portion of the phenolic impurities and an aqueous raffinate phase depleted in the phenolic impurities, the improvement which comprises effecting the separation of the phases in the presence of a phase separation promoting amount of at least one polyhydric alcohol.
    Type: Grant
    Filed: November 23, 1984
    Date of Patent: March 11, 1986
    Assignee: Exxon Research & Engineering Co.
    Inventors: Stephen A. Yuhas, Jr., Denise Lopez