Granted Patent
Utility
US 6,344,680 · App. 09/527,817
Planar semiconductor device
Inventor:
Koji Yamaguchi
Patented Case
View Patent ↗
Granted: Feb 5, 2002
Filed: Mar 17, 2000
Inventor
Koji Yamaguchi
Assignee (at issue)
FUJI ELECTRIC CO., 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.