Granted Patent
Utility
US 5,389,211 · App. 08/148,925
Method for producing high purity hydroxides and alkoxides
Inventors:
Hossein Sharifian, David G. Diercks
Patented Case
View Patent ↗
Granted: Feb 14, 1995
Filed: Nov 8, 1993
Inventors
Hossein Sharifian
David G. Diercks
Assignee (at issue)
SACHEM, INC.
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.