Granted Patent
Utility
US 6,499,318 · App. 08/897,873
Glass optical waveguides passivated against hydrogen-induced loss increases
Inventors:
Paul J. Lemaire, Kenneth L. Walker
Patented Case
View Patent ↗
Granted: Dec 31, 2002
Filed: Jul 21, 1997
Inventors
Paul J. Lemaire
Kenneth L. Walker
Assignee (at issue)
Fitel USA Corp.
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.