Granted Patent
Utility
US 5,930,439 · App. 08/942,189
Planar optical waveguide
Inventors:
Sureshchandra M. Ojha, Terry Bricheno, Clifford Graham Cureton, Stephen Day, David John Moule
Patented Case
View Patent ↗
Granted: Jul 27, 1999
Filed: Oct 1, 1997
Inventors
Sureshchandra M. Ojha
Terry Bricheno
Clifford Graham Cureton
Stephen Day
David John Moule
Assignee (at issue)
Nortel Networks Limited
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.