Granted Patent
Utility
US 5,798,401 · App. 08/713,708
Bituminous composition
Inventors:
Jan Korenstra, Willem C. Vonk, Jeroen Van Westrenen
Patented Case
View Patent ↗
Granted: Aug 25, 1998
Filed: Sep 13, 1996
Inventors
Jan Korenstra
Willem C. Vonk
Jeroen Van Westrenen
Assignee (at issue)
SHELL OIL COMPANY
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.