Granted Patent
Utility
US 6,690,857 · App. 10/309,523
Fiber devices having side evanescent coupling port
Inventors:
Shulai Zhao, Bo Pi
Patented Case
View Patent ↗
Granted: Feb 10, 2004
Filed: Dec 3, 2002
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.