Granted Patent
Utility
US 4,247,859 · App. 05/528,956
Epitaxially grown silicon layers with relatively long minority carrier lifetimes
Inventors:
Prosenjit Rai-Choudhury, Dieter Schroder
Patented Case
View Patent ↗
Granted: Jan 27, 1981
Filed: Nov 29, 1974
Inventors
Prosenjit Rai-Choudhury
Dieter Schroder
Assignee (at issue)
Westinghouse Electric Company LLC
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.