Patents by Inventor Mirian D. Nave

Mirian D. Nave 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).

  • Retroreflective article
    Patent number: 5117304
    Abstract: The present invention provides improved, flexible retroreflective articles based upon an optically clear, aliphatic polyurethane polymer. The aliphatic polymer has a plurality of hard chain segments of the formula--C(O)N(H)--C.sub.6 H.sub.10 --N(H)C(O)--.
    Type: Grant
    Filed: September 21, 1990
    Date of Patent: May 26, 1992
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Tzu-Li J. Huang, Walton J. Hammar, James C. Coderre, Mirian D. Nave