Granted Patent
Utility
US 5,322,808 · App. 08/020,095
Method of fabricating inverted modulation-doped heterostructure
Inventors:
April S. Brown, Joseph A. Henige, Mark Lui, Loi D. Nguyen, Robert A. Metzger, William E. Stanchina
Patented Case
View Patent ↗
Granted: Jun 21, 1994
Filed: Feb 19, 1993
Inventors
April S. Brown
Joseph A. Henige
Mark Lui
Loi D. Nguyen
Robert A. Metzger
William E. Stanchina
Assignee (at issue)
Hughes Aircraft Company
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.