Granted Patent
Utility
US 6,501,875 · App. 09/884,883
Mach-Zehnder inteferometers and applications based on evanescent coupling through side-polished fiber coupling ports
Inventors:
Shulai Zhao, Bo Pi
Patented Case
View Patent ↗
Granted: Dec 31, 2002
Filed: Jun 18, 2001
Inventors
Shulai Zhao
Bo Pi
Assignee (at issue)
Oluma, 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.