Granted Patent
Utility
US 5,946,435 · App. 08/918,357
Method and system for providing an improved three port wavelength division multiplexer
Inventors:
Yu Zheng, Feng Liu, Steven Zhu
Patented Case
View Patent ↗
Granted: Aug 31, 1999
Filed: Aug 26, 1997
Inventors
Yu Zheng
Feng Liu
Steven Zhu
Assignee (at issue)
Oplink Communications, LLC
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.