Granted Patent
Utility
US 5,663,824 · App. 08/146,653
Optical modulators as monolithically integrated optical isolators
Inventors:
Thomas L. Koch, Fumio Koyama, Kang-Yih Liou
Patented Case
View Patent ↗
Granted: Sep 2, 1997
Filed: Nov 2, 1993
Inventors
Thomas L. Koch
Fumio Koyama
Kang-Yih Liou
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.