Granted Patent
Utility
US 5,476,646 · App. 08/230,580
X-ray contrast compositions containing iodophenoxyalkanes and pharmaceutically acceptable clays
Inventors:
Stephen B. Ruddy, Gregory L. McIntire, Mary E. Roberts, John L. Toner
Patented Case
View Patent ↗
Granted: Dec 19, 1995
Filed: Apr 21, 1994
Inventors
Stephen B. Ruddy
Gregory L. McIntire
Mary E. Roberts
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.