Granted Patent
Utility
US 5,128,407 · App. 07/735,502
Urea extended polyisocyanates
Inventors:
Heber D. Layton, Howard S. Duff, Kevin R. Molyneaux
Patented Case
View Patent ↗
Granted: Jul 7, 1992
Filed: Jul 25, 1991
Inventors
Heber D. Layton
Howard S. Duff
Kevin R. Molyneaux
Assignee (at issue)
Miles 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.