Granted Patent
Utility
US 6,400,478 · App. 09/054,287
Wavelength-division-multiplexed optical transmission system with expanded bidirectional transmission capacity over a single fiber
Inventors:
Xin Cheng, Shouhua Huang
Patented Case
View Patent ↗
Granted: Jun 4, 2002
Filed: Apr 2, 1998
Inventors
Xin Cheng
Shouhua Huang
Assignee (at issue)
Sorrento Networks, Inc.
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.