Granted Patent
Utility
US 4,564,807 · App. 06/593,801
Method of judging carrier lifetime in semiconductor devices
Inventors:
Hiroyuki Ikezi, Richard L. Freeman
Patented Case
View Patent ↗
Granted: Jan 14, 1986
Filed: Mar 27, 1984
Inventors
Hiroyuki Ikezi
Richard L. Freeman
Assignee (at issue)
GA Technologies, Inc.
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.