Granted Patent
Utility
US 6,635,971 · App. 10/042,270
Electronic device and optical transmission module
Inventors:
Toyoki Asada, Yuji Fujita, Hideo Sotokawa, Kazumi Kawamoto, Kunio Matsumoto, Shinya Hamagishi, Mari Matsuyoshi
Patented Case
View Patent ↗
Granted: Oct 21, 2003
Filed: Jan 11, 2002
Inventors
Toyoki Asada
Yuji Fujita
Hideo Sotokawa
Kazumi Kawamoto
Kunio Matsumoto
Shinya Hamagishi
Mari Matsuyoshi
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.