Granted Patent
Utility
US 5,659,640 · App. 08/495,281
Integrated waveguide having an internal optical grating
Inventor:
Charles H. Joyner
Patented Case
View Patent ↗
Granted: Aug 19, 1997
Filed: Jun 27, 1995
Inventor
Charles H. Joyner
Assignee (at issue)
LUCENT TECHNOLOGIES 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.