Granted Patent
Utility
US 6,449,097 · App. 09/587,266
Diffraction grating for wavelength division multiplexing/demultiplexing devices
Inventors:
Ninghui Zhu, Ian Turner, Yuri A. Yudin, Mikhail N. Sokolskiy, Robert K. Wade
Patented Case
View Patent ↗
Granted: Sep 10, 2002
Filed: Jun 5, 2000
Inventors
Ninghui Zhu
Ian Turner
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.