Granted Patent
Utility
US 4,727,094 · App. 06/937,419
Method for producing polyurethanes
Inventors:
Kenneth L. Hoy, Glenn A. Taylor
Patented Case
View Patent ↗
Granted: Feb 23, 1988
Filed: Dec 3, 1986
Inventors
Kenneth L. Hoy
Glenn A. Taylor
Assignee (at issue)
Union Carbide Corporation
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.