Granted Patent
Utility
US 6,400,855 · App. 09/612,049
N × N optical switching array device and system
Inventors:
Bulang Li, Suning Tang
Patented Case
View Patent ↗
Granted: Jun 4, 2002
Filed: Jul 7, 2000
Inventors
Bulang Li
Suning Tang
Assignee (at issue)
Radiant Photonics, 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.