Granted Patent
Utility
US 4,493,142 · App. 06/376,178
III-V Based semiconductor devices and a process for fabrication
Inventor:
James Hwang
Patented Case
View Patent ↗
Granted: Jan 15, 1985
Filed: May 7, 1982
Inventor
James Hwang
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.