Granted Patent
Utility
US 6,542,496 · App. 09/321,121
Packet switching method and apparatus thereof
Inventors:
Nagayuki Hirota, Hiroshi Sekino, Shigeki Morimoto, Yoshihito Sako, Masashi Fukuda
Patented Case
View Patent ↗
Granted: Apr 1, 2003
Filed: May 27, 1999
Inventors
Nagayuki Hirota
Hiroshi Sekino
Shigeki Morimoto
Yoshihito Sako
Masashi Fukuda
Assignees (at issue)
HITACHI, LTD.
Hitachi Information Technology 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.