Granted Patent
Utility
US 6,348,095 · App. 09/570,914
Method and apparatus for pulling a single crystal
Inventors:
Hideki Watanabe, Hiroshi Morita
Patented Case
View Patent ↗
Granted: Feb 19, 2002
Filed: May 15, 2000
Inventors
Hideki Watanabe
Hiroshi Morita
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.