Granted Patent
Utility
US 6,678,480 · App. 09/635,199
Optical transmitter and optical communication system
Inventors:
Masahiro Aoki, Katsuhiko Kuboki
Patented Case
View Patent ↗
Granted: Jan 13, 2004
Filed: Aug 9, 2000
Inventors
Masahiro Aoki
Katsuhiko Kuboki
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.