Granted Patent
Utility
US 5,124,426 · App. 07/412,373
Sprayable polyurea elastomer made from reaction of isocyanate compound with amine terminated polyether and di(methylthio)toluene diamine and diethyltoluene diamine chain extenders
Inventors:
Dudley J. Primeaux, II, Robert A. Grigsby, Jr., Doris M. Rice
Patented Case
View Patent ↗
Granted: Jun 23, 1992
Filed: Sep 26, 1989
Inventors
Dudley J. Primeaux, II
Robert A. Grigsby, Jr.
Doris M. Rice
Assignee (at issue)
Texaco Chemical Inc.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.