Patents by Inventor Forest A. Richey, Jr.

Forest A. Richey, Jr. 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).

  • Substituted ureas containing cyclic amines as chain extenders in polymeric systems
    Patent number: 5364924
    Abstract: Diamino ureas having the formula ##STR1## wherein each ring is saturated and includes 3-5 carbon atoms and n alkyl substituents R of 1-4 carbon atoms each and n for each ring is 1-4, a method of using these materials as chain extending agents in the manufacture of poly(urethane/urea)s or polyureas, and polymers having at least one constituent unit derived from such diamino ureas are claimed.
    Type: Grant
    Filed: March 31, 1993
    Date of Patent: November 15, 1994
    Assignee: OSi Specialties Inc.
    Inventors: Richard M. Gerkin, Forest A. Richey, Jr.