Patents by Inventor Robert G. Merrill

Robert G. Merrill 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).

  • Transparent copolyamide from caprolactam, cyclic diamine and cyclic dicarboxylic acid
    Patent number: 4398012
    Abstract: This invention is a transparent alcohol resistant, hot water resistant, thermoplastically formable copolymer of (A) 80.4 to 88.8 weight percent epsilon-caprolactam and the remaining (B) 11.2 to 19.6 weight percent of substantially equimolar portions of a moiety derived from (1) a diamine or diisocyanate and (2) a diacid or (c) 11.2 to 19.6 weight percent para amino benzoic acid.
    Type: Grant
    Filed: January 19, 1982
    Date of Patent: August 9, 1983
    Assignee: Allied Corporation
    Inventors: Robert G. Merrill, Robert A. Lofquist, Gene C. Weedon, John C. Haylock, Ian C. Twilley