Granted Patent
Utility
US 5,644,539 · App. 07/981,438
Storage device employing a flash memory
Inventors:
Hajime Yamagami, Kouichi Terada, Yoshihiro Hayashi, Takashi Tsunehiro, Kunihiro Katayama, Kenichi Kaki, Takeshi Furuno
Patented Case
View Patent ↗
Granted: Jul 1, 1997
Filed: Nov 25, 1992
Inventors
Hajime Yamagami
Kouichi Terada
Yoshihiro Hayashi
Takashi Tsunehiro
Kunihiro Katayama
Kenichi Kaki
Takeshi Furuno
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.