Granted Patent
Utility
US 5,081,241 · App. 07/596,896
Spiro-pyridazines and analogs thereof useful as aldose reductase inhibitors
Inventor:
Michael S. Malamas
Patented Case
View Patent ↗
Granted: Jan 14, 1992
Filed: Oct 11, 1990
Inventor
Michael S. Malamas
Assignee (at issue)
Amerimas Home Products, Inc.
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.