Granted Patent
Utility
US 5,153,227 · App. 07/306,676
Phenylsulfonyl nitromethanes as aldose reductase inhibitors
Inventors:
Steven P. Brown, Anthony L. Cooper, Jethro L. Longridge, Jeffrey James Morris, John Preston
Patented Case
View Patent ↗
Granted: Oct 6, 1992
Filed: Feb 6, 1989
Inventors
Steven P. Brown
Anthony L. Cooper
Jethro L. Longridge
Jeffrey James Morris
John Preston
Assignee (at issue)
IMPERIAL CHEMICAL INDUSTRIES LIMITED
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.