Granted Patent
Utility
US 5,326,553 · App. 08/012,171
Compositions of iodophenoxy alkanes and iodophenyl ethers in film-forming materials for visualization of the gastrointestinal tract
Inventors:
Carl R. Illig, Eugene R. Cooper, John L. Toner, Donald A. Upson, Brent Douty, Thomas J. Caulfield
Patented Case
View Patent ↗
Granted: Jul 5, 1994
Filed: Feb 2, 1993
Inventors
Carl R. Illig
Eugene R. Cooper
John L. Toner
Donald A. Upson
Brent Douty
Thomas J. Caulfield
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.