Granted Patent
Utility
US 4,229,427 · App. 05/920,081
Radioactive scanning agents with hydroquinone stabilizer
Inventor:
Harry S. Whitehouse
Patented Case
View Patent ↗
Granted: Oct 21, 1980
Filed: Jun 28, 1978
Inventor
Harry S. Whitehouse
Assignee (at issue)
The Procter & Gamble Company
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.