Granted Patent
Utility
US 5,692,003 · App. 08/625,029
Quantum-dot cascade laser
Inventors:
Ned Wingreen, Charles Allen Stafford
Patented Case
View Patent ↗
Granted: Nov 25, 1997
Filed: Mar 29, 1996
Inventors
Ned Wingreen
Charles Allen Stafford
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.