Granted Patent
Utility
US 5,189,083 · App. 07/853,564
Asphalt acrylic monomer-containing block polymer composition
Inventors:
Richard Gelles, Donn A. DuBois
Patented Case
View Patent ↗
Granted: Feb 23, 1993
Filed: Mar 18, 1992
Inventors
Richard Gelles
Donn A. DuBois
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.