Granted Patent
Utility
US 6,315,828 · App. 09/489,481
Continuous oxidation process for crystal pulling apparatus
Inventors:
John D. Holder, Bayard K. Johnson
Patented Case
View Patent ↗
Granted: Nov 13, 2001
Filed: Jan 21, 2000
Inventors
John D. Holder
Bayard K. Johnson
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.