Granted Patent
Utility
US 6,687,462 · App. 09/534,755
Wavelength slicer for optical signal switching
Inventors:
Hongtao Hou, Qin Zhang
Patented Case
View Patent ↗
Granted: Feb 3, 2004
Filed: Mar 24, 2000
Inventors
Hongtao Hou
Qin Zhang
Assignee (at issue)
Oplink Communications, LLC
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.