Granted Patent
Utility
US 4,483,746 · App. 06/385,144
Process for phosphorus purification
Inventors:
Harvey Rosenhouse, Jeffrey C. Dore
Patented Case
View Patent ↗
Granted: Nov 20, 1984
Filed: Jun 4, 1982
Inventors
Harvey Rosenhouse
Jeffrey C. Dore
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.