Granted Patent
Utility
US 6,728,282 · App. 09/883,542
Engineering the gain/loss profile of intersubband optical devices having heterogeneous cascades
Inventors:
Federico Capasso, Alfred Yi Cho, Rafaelle Colombelli, Claire F. Gmachl, Hock Ng, Deborah Lee Sivco
Patented Case
View Patent ↗
Granted: Apr 27, 2004
Filed: Jun 18, 2001
Inventors
Federico Capasso
Alfred Yi Cho
Rafaelle Colombelli
Claire F. Gmachl
Hock Ng
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.