Granted Patent
Utility
US 5,466,435 · App. 08/222,787
Compositions of iodophenoxy alkylene ethers and cellulose derivatives for visualization of the gastrointestinal tract
Inventors:
Edward J. Baker, Edward R. Bacon, Carl R. Illig, Thomas J. Caulfield, Brent Douty, Kurt A. Josef, John L. Toner, Robert W. Lee
Patented Case
View Patent ↗
Granted: Nov 14, 1995
Filed: Apr 4, 1994
Inventors
Edward J. Baker
Edward R. Bacon
Carl R. Illig
Thomas J. Caulfield
Brent Douty
Kurt A. Josef
John L. Toner
Robert W. Lee
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.