Granted Patent
Utility
US 5,808,793 · App. 08/588,042
Low-cost compact optical isolators
Inventors:
Kok-Wai Chang, Long Yang
Patented Case
View Patent ↗
Granted: Sep 15, 1998
Filed: Jan 17, 1996
Inventors
Kok-Wai Chang
Long Yang
Assignee (at issue)
Hewlett-Packard Company, L.P.
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.