Granted Patent
Utility
US 4,537,759 · App. 06/507,768
Production of elemental silicon from impure silane feed
Inventors:
Joe M. Walker, Thomas M. Potts
Patented Case
View Patent ↗
Granted: Aug 27, 1985
Filed: Jun 27, 1983
Inventors
Joe M. Walker
Thomas M. Potts
Assignee (at issue)
Eagle-Picher Industries, 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.