Granted Patent
Utility
US 6,210,477 · App. 09/217,968
Methods for pulling a single crystal
Inventors:
Teruo Izumi, Hideki Watanabe
Patented Case
View Patent ↗
Granted: Apr 3, 2001
Filed: Dec 22, 1998
Inventors
Teruo Izumi
Hideki Watanabe
Assignee (at issue)
SUMITOMO METAL INDUSTRIES, LTD.
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.