Patents by Inventor by Mary A. Thomas, executrix

by Mary A. Thomas, executrix 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).

  • Fluorochemical composition for coating soil resistant yarn
    Patent number: 4604316
    Abstract: Improved retention on yarn and processing properties have been discovered in a composition of matter comprising meta and para pyromellitates ##STR1## and 70 to 95 percent by weight of specific dimers and other oligomers of I. and II., wherein A is (CH.sub.2).sub.2 (CF.sub.2).sub.n CF.sub.3, where n is 5 to 13 and B is CH.sub.2 CHOHCH.sub.2 Cl.
    Type: Grant
    Filed: September 14, 1982
    Date of Patent: August 5, 1986
    Assignee: Allied Corporation
    Inventors: Robert H. Thomas, deceased, by Mary A. Thomas, executrix, Willis B. Hammond, Michael P. Friedberger, William A. Archie