Granted Patent
Utility
US 5,340,796 · App. 07/976,294
Oxide superconductor comprising Cu, Bi, Ca and Sr
Inventors:
Robert J. Cava, Steven A. Sunshine
Patented Case
View Patent ↗
Granted: Aug 23, 1994
Filed: Nov 13, 1992
Inventors
Robert J. Cava
Steven A. Sunshine
Assignee (at issue)
AT&T Bell Laboratories
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.