Granted Patent
Utility
US 5,964,944 · App. 08/820,888
Method of producing silicon carbide single crystal
Inventors:
Naohiro Sugiyama, Atsuto Okamoto, Toshihiko Tani, Nobuo Kamiya
Patented Case
View Patent ↗
Granted: Oct 12, 1999
Filed: Mar 21, 1997
Inventors
Naohiro Sugiyama
Atsuto Okamoto
Toshihiko Tani
Nobuo Kamiya
Assignee (at issue)
KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
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.