Granted Patent
Utility
US 5,118,733 · App. 07/810,547
Asphalt-block copolymer paving composition
Inventors:
Richard Gelles, James H. Collins, Mark G. Bouldin
Patented Case
View Patent ↗
Granted: Jun 2, 1992
Filed: Dec 19, 1991
Inventors
Richard Gelles
James H. Collins
Mark G. Bouldin
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.