Granted Patent
Utility
US 5,286,307 · App. 07/871,831
Process for making Nd-B-Fe type magnets utilizing a hydrogen and oxygen treatment
Inventor:
Richard L. Anderson
Patented Case
View Patent ↗
Granted: Feb 15, 1994
Filed: Apr 21, 1992
Inventor
Richard L. Anderson
Assignee (at issue)
SPS TECHNOLOGIES, 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.