Granted Patent
Utility
US 6,288,431 · App. 09/054,399
Semiconductor device and a method of manufacturing the same
Inventors:
Shoichi Iwasa, Tatsuya Kawamata
Patented Case
View Patent ↗
Granted: Sep 11, 2001
Filed: Apr 3, 1998
Inventors
Shoichi Iwasa
Tatsuya Kawamata
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.