Granted Patent
Utility
US 4,929,598 · App. 07/292,020
Oxygen plasma treatment of yttrium barium copper oxide
Inventors:
Brian G. Bagley, Jean-Marie Tarascon
Patented Case
View Patent ↗
Granted: May 29, 1990
Filed: Dec 30, 1988
Inventors
Brian G. Bagley
Jean-Marie Tarascon
Assignee (at issue)
Bell Communications Research, Inc.
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.