Granted Patent
Utility
US 5,212,152 · App. 07/743,399
Protection of oxide superconductors from degradation
Inventors:
Stuart B. Lyon, Beverley J. Hepburn
Patented Case
View Patent ↗
Granted: May 18, 1993
Filed: Aug 16, 1991
Inventors
Stuart B. Lyon
Beverley J. Hepburn
Assignee (at issue)
British Technology Group Limited
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.