Granted Patent
Utility
US 5,206,411 · App. 07/740,341
Cured arylcyclobutene carboxylate ester compositions
Inventor:
Pen-Chung Wang
Patented Case
View Patent ↗
Granted: Apr 27, 1993
Filed: Aug 5, 1991
Inventor
Pen-Chung Wang
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.