Granted Patent
Utility
US 5,170,407 · App. 07/777,836
Elimination of heterojunction band discontinuities
Inventors:
Erdmann F. Schubert, Li-Wei Tu, George J. Zydzik
Patented Case
View Patent ↗
Granted: Dec 8, 1992
Filed: Oct 11, 1991
Inventors
Erdmann F. Schubert
Li-Wei Tu
George J. Zydzik
Assignee (at issue)
AT&T Bell Laboratories
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.