Granted Patent
Utility
US 6,434,299 · App. 09/604,616
Wavelength division multiplexing/demultiplexing devices having concave diffraction gratings
Inventors:
Yuri A. Yudin, Mikhail N. Sokolskiy, Robert K. Wade
Patented Case
View Patent ↗
Granted: Aug 13, 2002
Filed: Jun 27, 2000
Inventors
Yuri A. Yudin
Mikhail N. Sokolskiy
Robert K. Wade
Assignee (at issue)
LightChip, 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.