Granted Patent
Utility
US 4,803,240 · App. 07/129,166
Styrene grafted isoprene psa's
Inventors:
Charles A. Midgley, Orest N. Chick
Patented Case
View Patent ↗
Granted: Feb 7, 1989
Filed: Dec 7, 1987
Inventors
Charles A. Midgley
Orest N. Chick
Assignee (at issue)
BASF SE
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.