Granted Patent
Utility
US 5,963,571 · App. 08/884,967
Quantum-dot cascade laser
Inventor:
Ned Wingreen
Patented Case
View Patent ↗
Granted: Oct 5, 1999
Filed: Jun 30, 1997
Inventor
Ned Wingreen
Assignee (at issue)
NEC Research Institute, 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.