Granted Patent
Utility
US 6,319,313 · App. 09/521,288
Barium doping of molten silicon for use in crystal growing process
Inventors:
Richard J. Phillips, Steven Jack Keltner, John D. Holder
Patented Case
View Patent ↗
Granted: Nov 20, 2001
Filed: Mar 8, 2000
Inventors
Richard J. Phillips
Steven Jack Keltner
John D. Holder
Assignee (at issue)
MEMC Electronic Materials, 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.