Granted Patent
Utility
US 6,747,895 · App. 10/083,602
Nonvolatile semiconductor memory, data deletion method of nonvolatile semiconductor memory, information processing apparatus and nonvolatile semiconductor memory system
Inventors:
Yukiko Umemoto, Toshihiro Tanaka, Hiroyuki Tanikawa, Yutaka Shinagawa
Patented Case
View Patent ↗
Granted: Jun 8, 2004
Filed: Feb 27, 2002
Inventors
Yukiko Umemoto
Toshihiro Tanaka
Hiroyuki Tanikawa
Yutaka Shinagawa
Assignees (at issue)
Renesas Technology Corporation
Hitachi Ulsi Systems 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.