Granted Patent
Utility
US 4,736,027 · App. 06/937,782
Indole-phthalide derivatives
Inventors:
William M. Hung, Angelique M. Black
Patented Case
View Patent ↗
Granted: Apr 5, 1988
Filed: Dec 4, 1986
Inventors
William M. Hung
Angelique M. Black
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.