Granted Patent
Utility
US 6,175,446 · App. 09/159,141
Polarization-independent semiconductor optical amplifier
Inventor:
Gerard A. Alphonse
Patented Case
View Patent ↗
Granted: Jan 16, 2001
Filed: Sep 23, 1998
Inventor
Gerard A. Alphonse
Assignee (at issue)
Sarnoff Corporation
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.