Granted Patent
Utility
US 6,169,824 · App. 09/167,745
Non-linear optical device for processing an optical signal, comprising an interferometer with multiple arms
Inventors:
Didier Sigogne, Arnaud Rigny, Sandrine Chelles
Patented Case
View Patent ↗
Granted: Jan 2, 2001
Filed: Oct 7, 1998
Inventors
Didier Sigogne
Arnaud Rigny
Sandrine Chelles
Assignee (at issue)
FRANCE TELECOM
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.