Granted Patent
Utility
US 6,447,601 · App. 09/811,982
Crystal puller and method for growing monocrystalline silicon ingots
Inventors:
Richard J. Phillips, Larry E. Drafall, Kirk D. McCallum
Patented Case
View Patent ↗
Granted: Sep 10, 2002
Filed: Mar 19, 2001
Inventors
Richard J. Phillips
Larry E. Drafall
Kirk D. McCallum
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.