Granted Patent
Utility
US 4,396,598 · App. 06/338,382
Triiodoisophthalamide X-ray contrast agent
Inventor:
Youlin Lin
Patented Case
View Patent ↗
Granted: Aug 2, 1983
Filed: Jan 11, 1982
Inventor
Youlin Lin
Assignee (at issue)
MALLINCKRODT LLC
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.