Granted Patent
Utility
US 6,374,016 · App. 09/826,931
Polarization insensitive grating in a planar channel optical waveguide and method to achieve the same
Inventors:
Jacques Albert, Francois Bilodeau, Kenneth O. Hill, Derwyn C. Johnson, Stephen J. Mihailov
Patented Case
View Patent ↗
Granted: Apr 16, 2002
Filed: Apr 6, 2001
Inventors
Jacques Albert
Francois Bilodeau
Kenneth O. Hill
Derwyn C. Johnson
Stephen J. Mihailov
Assignee (at issue)
HER MAJESTY THE QUEEN IN RIGHT OF CANADA AS REPRESENTED BY THE MINISTER OF NATURAL RESOURCES
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.