Granted Patent
Utility
US 4,900,739 · App. 07/260,149
Novel spirosuccinimides as aldose reductase inhibitors and antihyperglycemic agents
Inventor:
Jay E. Wroel
Patented Case
View Patent ↗
Granted: Feb 13, 1990
Filed: Oct 20, 1988
Inventor
Jay E. Wroel
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.