Granted Patent
Utility
US 6,363,190 · App. 09/502,973
Polarization insensitive fused fiber coupler method and apparatus
Inventor:
Peter Chen
Patented Case
View Patent ↗
Granted: Mar 26, 2002
Filed: Feb 11, 2000
Inventor
Peter Chen
Assignee (at issue)
New Focus, 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.