Granted Patent
Utility
US 5,914,517 · App. 08/853,943
Trench-isolation type semiconductor device
Inventor:
Hidekazu Konogi
Patented Case
View Patent ↗
Granted: Jun 22, 1999
Filed: May 9, 1997
Inventor
Hidekazu Konogi
Assignee (at issue)
NIPPON STEEL CORPORATION
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.