Granted Patent
Utility
US 6,067,178 · App. 08/931,434
Multiple wavelength division multiplexer with reduced loss
Inventor:
Yu Zheng
Patented Case
View Patent ↗
Granted: May 23, 2000
Filed: Sep 16, 1997
Inventor
Yu Zheng
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.