Granted Patent
Utility
US 5,239,041 · App. 07/865,170
Hindered amines to slow down reactivity in producing rim elastomers
Inventors:
Robert A. Grigsby, Jr., Michael Cuscurida, Robert L. Zimmerman, George P. Speranza
Patented Case
View Patent ↗
Granted: Aug 24, 1993
Filed: Apr 8, 1992
Inventors
Robert A. Grigsby, Jr.
Michael Cuscurida
Robert L. Zimmerman
George P. Speranza
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.