Granted Patent
Utility
US 5,936,989 · App. 08/841,059
Quantum cascade laser
Inventors:
Federico Capasso, Alfred Yi Cho, Jerome Faist, Albert Lee Hutchinson, Gaetano Scamarcio, Carlo Sirtori, Deborah Lee Sivco
Patented Case
View Patent ↗
Granted: Aug 10, 1999
Filed: Apr 29, 1997
Inventors
Federico Capasso
Alfred Yi Cho
Jerome Faist
Albert Lee Hutchinson
Gaetano Scamarcio
Carlo Sirtori
Deborah Lee Sivco
Assignee (at issue)
LUCENT TECHNOLOGIES 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.