Granted Patent
Utility
US 5,451,619 · App. 08/293,355
Asphalt composition containing epoxidized polymers
Inventors:
Robert Q. Kluttz, James R. Erickson
Patented Case
View Patent ↗
Granted: Sep 19, 1995
Filed: Aug 19, 1994
Inventors
Robert Q. Kluttz
James R. Erickson
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.