Granted Patent
Utility
US 4,498,227 · App. 06/510,761
Wafer fabrication by implanting through protective layer
Inventors:
Paul Howell, Gregory B. Currier
Patented Case
View Patent ↗
Granted: Feb 12, 1985
Filed: Jul 5, 1983
Inventors
Paul Howell
Gregory B. Currier
Assignee (at issue)
Fairchild Camera & Instrument Corp.
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.