Granted Patent
Utility
US 5,754,838 · App. 08/576,491
Synchronous dynamic memory device capable of operating over wide range of operation frequencies
Inventors:
Ken Shibata, Kanji Oishi
Patented Case
View Patent ↗
Granted: May 19, 1998
Filed: Dec 21, 1995
Inventors
Ken Shibata
Kanji Oishi
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.