Granted Patent
Utility
US 6,563,995 · App. 09/825,148
Optical wavelength filtering apparatus with depressed-index claddings
Inventors:
Gregory L. Keaton, Mark Alan Arbore, Thomas J. Kane
Patented Case
View Patent ↗
Granted: May 13, 2003
Filed: Apr 2, 2001
Inventors
Gregory L. Keaton
Mark Alan Arbore
Thomas J. Kane
Assignee (at issue)
Lightwave Electronics
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.