Granted Patent
Utility
US 6,538,331 · App. 09/769,359
Semiconductor device and a method of manufacturing the same
Inventors:
Masachika Masuda, Toshihiko Usami
Patented Case
View Patent ↗
Granted: Mar 25, 2003
Filed: Jan 26, 2001
Inventors
Masachika Masuda
Toshihiko Usami
Assignees (at issue)
HITACHI, LTD.
Akita Electronics 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.