Granted Patent
Utility
US 5,164,798 · App. 07/726,319
Diffusion control of P-N junction location in multilayer heterostructure light emitting devices
Inventor:
Kuo-Hsin Huang
Patented Case
View Patent ↗
Granted: Nov 17, 1992
Filed: Jul 5, 1991
Inventor
Kuo-Hsin Huang
Assignee (at issue)
Hewlett-Packard Company, L.P.
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.