Patents by Inventor Renata C. Stegmeier

Renata C. Stegmeier 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 of making selected poly(dianhydrides) compounds
    Patent number: 5336787
    Abstract: A process of making poly(dianhydride) compounds having formulae (I) and (II): ##STR1## where m is 0 to 50. ##STR2## wherein n is 0 to 20 and X is bond junction, oxygen atom, sulfur atom, SO.sub.2, C(CF.sub.3), CO, C(CH.sub.3).sub.2, CF.sub.2 --O--CF.sub.2, CH.sub.2, and CHOH.
    Type: Grant
    Filed: February 1, 1993
    Date of Patent: August 9, 1994
    Assignee: Olin Corporation
    Inventors: Murray A. Ruggiero, Renata C. Stegmeier, Bruce A. Marien, Keith O. Wilbourn