Granted Patent
Utility
US 4,329,016 · App. 06/078,106
Optical waveguide formed by diffusing metal into substrate
Inventor:
Bor-Uei Chen
Patented Case
View Patent ↗
Granted: May 11, 1982
Filed: Sep 24, 1979
Inventor
Bor-Uei Chen
Assignee (at issue)
Hughes Aircraft Company
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.