Patents by Inventor Diane Wilger-Nowicki

Diane Wilger-Nowicki 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).

  • Water addition to crystallization train to purify terephthalic acid product
    Patent number: 5095146
    Abstract: Optical density of terephthalic acid is reduced in excess of ninety percent by the direct addition of water to selected crystallizers in a precipitative process based on hydrogenation and flask crystallization.
    Type: Grant
    Filed: March 25, 1991
    Date of Patent: March 10, 1992
    Assignee: Amoco Corporation
    Inventors: Martin A. Zeitlin, Diane Wilger-Nowicki