Granted Patent
Utility
US 6,717,210 · App. 10/289,339
Trench gate type semiconductor device and fabricating method of the same
Inventors:
Akio Takano, Takahiro Kawano
Patented Case
View Patent ↗
Granted: Apr 6, 2004
Filed: Nov 7, 2002
Inventors
Akio Takano
Takahiro Kawano
Assignee (at issue)
Kabushiki Kaisha Toshiba
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.