Granted Patent
Utility
US 6,013,755 · App. 08/815,154
Method of preparing an aliphatic polyurea spray elastomer system
Inventors:
Dudley J. Primeaux, II, Robert L. Zimmerman, Kenneth Hillman
Patented Case
View Patent ↗
Granted: Jan 11, 2000
Filed: Mar 11, 1997
Inventors
Dudley J. Primeaux, II
Robert L. Zimmerman
Kenneth Hillman
Assignee (at issue)
HUNTSMAN PETROCHEMICAL LLC
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.