Patents by Inventor John D. Eliassen

John D. Eliassen 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).

  • Process for catalyst removal from polyphenylene ether reaction solutions
    Patent number: 4237265
    Abstract: An improved process is disclosed which is useful in separating the catalyst residue from a polyphenylene ether reaction solution. The process is based on the use of an extracting agent in a liquid-liquid extraction process wherein the aqueous extraction phase is maintained in a continuous phase while the organic phase is maintained as a discrete phase.
    Type: Grant
    Filed: September 8, 1975
    Date of Patent: December 2, 1980
    Assignee: General Electric Company
    Inventors: John D. Eliassen, Gim F. Lee, Jr., James Watson, Jr.