Granted Patent
Utility
US 5,731,397 · App. 08/632,825
Polyurea spray railcar lining systems
Inventors:
Dudley J. Primeaux, II, Kenneth C. Anglin
Patented Case
View Patent ↗
Granted: Mar 24, 1998
Filed: Apr 16, 1996
Inventors
Dudley J. Primeaux, II
Kenneth C. Anglin
Assignee (at issue)
Huntman Petrochemical 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.