Patents by Inventor Randall Stephens

Randall Stephens 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).

  • N-cyanoimides
    Patent number: 5216173
    Abstract: Polyfunctional N-cyanoimides and their precursors and derivatives are disclosed along with methods for their preparation and interconversion. Also disclosed are curable compositions comprising the N-cyanoimides or poly(amide-cyanoamides) and reactive diluents as well as novel dianhydrides, polyimides, and poly(amide-cyanoamides) and methods for making them.
    Type: Grant
    Filed: July 23, 1990
    Date of Patent: June 1, 1993
    Assignee: Henkel Research Corporation
    Inventors: Randall Stephens, Linda A. Domeier