Granted Patent
Utility
US 6,573,530 · App. 09/969,348
Multiple quantum well optoelectronic devices
Inventors:
Edward Hartley Sargent, Dayan Ban
Patented Case
View Patent ↗
Granted: Jun 3, 2003
Filed: Oct 2, 2001
Inventors
Edward Hartley Sargent
Dayan Ban
Assignee (at issue)
Nortel Networks 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.