Granted Patent
Utility
US 5,473,722 · App. 08/094,199
Rare-earth-doped lithium niobate waveguide structures
Inventors:
Wolfgang Sohler, Hubertus Suche
Patented Case
View Patent ↗
Granted: Dec 5, 1995
Filed: Jul 28, 1993
Inventors
Wolfgang Sohler
Hubertus Suche
Assignee (at issue)
Pirelli Cavi S.p.A.
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.