Granted Patent
Utility
US 5,274,151 · App. 07/958,376
Process for the preparation of solid iron (III) complexes
Inventor:
Jon C. Thunberg
Patented Case
View Patent ↗
Granted: Dec 28, 1993
Filed: Oct 8, 1992
Inventor
Jon C. Thunberg
Assignee (at issue)
Hampshire Chemical Corp.
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.