Granted Patent
Utility
US 6,816,646 · App. 10/024,510
Light-sensitive detector and optical demultiplexer
Inventors:
Kenichi Nakama, Hisao Nagata
Patented Case
View Patent ↗
Granted: Nov 9, 2004
Filed: Dec 21, 2001
Inventors
Kenichi Nakama
Hisao Nagata
Assignee (at issue)
NIPPON SHEET GLASS COMPANY, LIMITED
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.