Granted Patent
Utility
US 6,038,167 · App. 09/131,395
Nonvolatile memory device and refreshing method
Inventors:
Hitoshi Miwa, Hiroaki Kotani
Patented Case
View Patent ↗
Granted: Mar 14, 2000
Filed: Aug 7, 1998
Inventors
Hitoshi Miwa
Hiroaki Kotani
Assignee (at issue)
HITACHI, 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.