Granted Patent
Utility
US 4,806,325 · App. 07/219,963
Process for recovering elemental phosphorus and a metal concentrate from ferrophos
Inventors:
Theodore F. Munday, Richard A. Mohr
Patented Case
View Patent ↗
Granted: Feb 21, 1989
Filed: Jul 14, 1988
Inventors
Theodore F. Munday
Richard A. Mohr
Assignee (at issue)
FMC CORPORATION
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.