Granted Patent
Utility
US 6,793,902 · App. 10/316,402
Seed crystal for production of silicon single crystal and method for production of silicon single crystal
Inventors:
Masahiro Tanaka, Yutaka Kishida, Teruyuki Tamaki, Hideo Kato, Seiki Takebayashi
Patented Case
View Patent ↗
Granted: Sep 21, 2004
Filed: Dec 11, 2002
Inventors
Masahiro Tanaka
Yutaka Kishida
Teruyuki Tamaki
Hideo Kato
Seiki Takebayashi
Assignee (at issue)
SILTRONIC AG
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.