Granted Patent
Utility
US 5,604,227 · App. 08/421,133
Pyridazinedione compounds useful in treating neurological disorders
Inventors:
Thomas Bare, Richard B. Sparks
Patented Case
View Patent ↗
Granted: Feb 18, 1997
Filed: Apr 13, 1995
Inventors
Thomas Bare
Richard B. Sparks
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.