Granted Patent
Utility
US 6,144,681 · App. 09/033,250
Article comprising a dual-wavelength quantum cascade photon source
Inventors:
Federico Capasso, Alfred Yi Cho, Jerome Faist, Albert Lee Hutchinson, Carlo Sirtori, Deborah Lee Sivco, Alessandro Tredicucci
Patented Case
View Patent ↗
Granted: Nov 7, 2000
Filed: Mar 2, 1998
Inventors
Federico Capasso
Alfred Yi Cho
Jerome Faist
Albert Lee Hutchinson
Carlo Sirtori
Deborah Lee Sivco
Alessandro Tredicucci
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.