Granted Patent
Utility
US 5,330,740 · App. 08/024,714
Compositions of iodoaniline derivatives in film-forming materials for visualization of the gastrointestinal tract
Inventors:
Carl R. Illig, Thomas J. Caulfield
Patented Case
View Patent ↗
Granted: Jul 19, 1994
Filed: Mar 1, 1993
Inventors
Carl R. Illig
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.