Granted Patent
Utility
US 5,260,049 · App. 07/876,933
X-ray contrast compositions comprising alkoxyphenols
Inventors:
Carl R. Illig, John L. Toner
Patented Case
View Patent ↗
Granted: Nov 9, 1993
Filed: May 1, 1992
Inventors
Carl R. Illig
John L. Toner
Assignee (at issue)
Sterling Winthrop 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.