Granted Patent
Utility
US 5,248,564 · App. 07/988,073
C-axis perovskite thin films grown on silicon dioxide
Inventor:
Ramamoorthy Ramesh
Patented Case
View Patent ↗
Granted: Sep 28, 1993
Filed: Dec 9, 1992
Inventor
Ramamoorthy Ramesh
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.