Granted Patent
Utility
US 5,732,179 · App. 08/413,577
Birefringence-free semiconductor waveguide
Inventors:
Catherine Genevieve Caneau, Ghie-Hugh Song, Julian Bernard Donald Soole
Patented Case
View Patent ↗
Granted: Mar 24, 1998
Filed: Mar 30, 1995
Inventors
Catherine Genevieve Caneau
Ghie-Hugh Song
Julian Bernard Donald Soole
Assignee (at issue)
Bell Communications Research, 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.