Granted Patent
Utility
US 6,093,913 · App. 09/092,391
Electrical heater for crystal growth apparatus with upper sections producing increased heating power compared to lower sections
Inventors:
Richard G. Schrenker, William L. Luter
Patented Case
View Patent ↗
Granted: Jul 25, 2000
Filed: Jun 5, 1998
Inventors
Richard G. Schrenker
William L. Luter
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.