Granted Patent
Utility
US 5,604,697 · App. 08/574,104
Semiconductor
Inventors:
Tsugio Takahashi, Goro Kitsukawa, Takesada Akiba, Yasushi Kawase, Masayuki Nakamura
Patented Case
View Patent ↗
Granted: Feb 18, 1997
Filed: Dec 20, 1995
Inventors
Tsugio Takahashi
Goro Kitsukawa
Takesada Akiba
Yasushi Kawase
Masayuki Nakamura
Assignees (at issue)
HITACHI, LTD.
Hitachi Device Engineering 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.