Granted Patent
Utility
US 5,457,709 · App. 08/223,341
Unipolar semiconductor laser
Inventors:
Federico Capasso, Alfred Yi Cho, Jerome Faist, Albert Lee Hutchinson, Serge Luryi, Carlo Sirtori, Deborah Lee Sivco
Patented Case
View Patent ↗
Granted: Oct 10, 1995
Filed: Apr 4, 1994
Inventors
Federico Capasso
Alfred Yi Cho
Jerome Faist
Albert Lee Hutchinson
Serge Luryi
Carlo Sirtori
Deborah Lee Sivco
Assignee (at issue)
AT & T IPM Corp.
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.