Granted Patent
Utility
US 4,290,825 · App. 06/011,959
Semiconductor devices containing protons and deuterons implanted regions
Inventors:
Geoffrey Dearnaley, Kenneth Steeples, Ian J. Saunders
Patented Case
View Patent ↗
Granted: Sep 22, 1981
Filed: Feb 13, 1979
Inventors
Geoffrey Dearnaley
Kenneth Steeples
Ian J. Saunders
Assignee (at issue)
United Kingdom Atomic Energy Authority
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.