Granted Patent
Utility
US 6,366,376 · App. 09/223,563
Optical transmitting device using wavelength division multiplexing to transmit signal lights having frequencies arranged to eliminate effects of four-wave mixing (FWM)
Inventors:
Hideyuki Miyata, Hiroshi Onaka, Terumi Chikama
Patented Case
View Patent ↗
Granted: Apr 2, 2002
Filed: Dec 31, 1998
Inventors
Hideyuki Miyata
Hiroshi Onaka
Terumi Chikama
Assignee (at issue)
Fujitsu Limited
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.