Granted Patent
Utility
US 4,697,018 · App. 06/781,589
9-julolidinyl derivatives and process of preparing them
Inventors:
Paul Schmidt, William M. Hung
Patented Case
View Patent ↗
Granted: Sep 29, 1987
Filed: Sep 30, 1985
Inventors
Paul Schmidt
William M. Hung
Assignee (at issue)
Hilton Davis Chemical Co.
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.