Granted Patent
Utility
US 4,889,868 · App. 06/809,649
Bis-imidazolinoamino derivatives as antiallergy compounds
Inventor:
Fu-Chih Huang
Patented Case
View Patent ↗
Granted: Dec 26, 1989
Filed: Dec 16, 1985
Inventor
Fu-Chih Huang
Assignee (at issue)
Rorer Pharmaceutical Corporation
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.