Granted Patent
Utility
US 5,814,887 · App. 08/754,298
Semiconductor device and production method thereof
Inventor:
Tomofune Tani
Patented Case
View Patent ↗
Granted: Sep 29, 1998
Filed: Nov 20, 1996
Inventor
Tomofune Tani
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.