Granted Patent
Utility
US 5,907,647 · App. 08/802,051
Long-period grating switches and devices using them
Inventors:
Benjamin John Eggleton, Justin Boyd Judkins, Richart Elliott Slusher, Ashish Madhukar Vengsarkar
Patented Case
View Patent ↗
Granted: May 25, 1999
Filed: Feb 18, 1997
Inventors
Benjamin John Eggleton
Justin Boyd Judkins
Richart Elliott Slusher
Ashish Madhukar Vengsarkar
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.