Granted Patent
Utility
US 5,259,046 · App. 07/955,002
Article comprising an optical waveguide containing a fluorescent dopant
Inventors:
David J. DiGiovanni, Ashish Madhukar Vengsarkar, Kenneth L. Walker
Patented Case
View Patent ↗
Granted: Nov 2, 1993
Filed: Oct 1, 1992
Inventors
David J. DiGiovanni
Ashish Madhukar Vengsarkar
Kenneth L. Walker
Assignee (at issue)
AT&T Bell Laboratories
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.