Granted Patent
Utility
US 6,183,553 · App. 09/097,779
Process and apparatus for preparation of silicon crystals with reduced metal content
Inventors:
John D. Holder, Steven M. Joslin, Harold W. Korb
Patented Case
View Patent ↗
Granted: Feb 6, 2001
Filed: Jun 15, 1998
Inventors
John D. Holder
Steven M. Joslin
Harold W. Korb
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.