Granted Patent
Utility
US 5,867,428 · App. 08/889,191
Nonvolatile memory system semiconductor memory and writing method
Inventors:
Tatsuya Ishii, Hitoshi Miwa, Osamu Tsuchiya, Shooji Kubono
Patented Case
View Patent ↗
Granted: Feb 2, 1999
Filed: Jul 8, 1997
Inventors
Tatsuya Ishii
Hitoshi Miwa
Osamu Tsuchiya
Shooji Kubono
Assignees (at issue)
HITACHI, LTD.
USLI Engineering Corp.
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.