Granted Patent
Utility
US 6,207,024 · App. 09/412,774
Method of preparing phosphorus
Inventor:
Richard R. Severns
Patented Case
View Patent ↗
Granted: Mar 27, 2001
Filed: Oct 4, 1999
Inventor
Richard R. Severns
Assignee (at issue)
Astaris L.L.C.
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.