Granted Patent
Utility
US 5,935,328 · App. 08/978,334
Apparatus for use in crystal pulling
Inventors:
Carl F. Cherko, Harold W. Korb, Richard G. Schrenker, Dick S. Williams
Patented Case
View Patent ↗
Granted: Aug 10, 1999
Filed: Nov 25, 1997
Inventors
Carl F. Cherko
Harold W. Korb
Richard G. Schrenker
Dick S. Williams
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.