Granted Patent
Utility
US 4,942,231 · App. 06/735,037
Method of preparing a chlorinated, brominated, radio-brominated, iodinated and/or radioiodinated aromatic or heteroaromatic compound
Inventor:
John Mertens
Patented Case
View Patent ↗
Granted: Jul 17, 1990
Filed: May 17, 1985
Inventor
John Mertens
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.