Granted Patent
Utility
US 5,175,778 · App. 07/745,472
Integrated optic waveguide coupler with reduced wavelength sensitivity
Inventors:
Noorallah Nourshargh, Simon P. Shipley
Patented Case
View Patent ↗
Granted: Dec 29, 1992
Filed: Aug 15, 1991
Inventors
Noorallah Nourshargh
Simon P. Shipley
Assignee (at issue)
GEC-Marconi Ltd.
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.