Granted Patent
Utility
US 4,636,378 · App. 06/743,717
Method of preparation of perovskite-type compounds
Inventors:
Ricardo C. Pastor, Florentino V. Lee
Patented Case
View Patent ↗
Granted: Jan 13, 1987
Filed: Jun 11, 1985
Inventors
Ricardo C. Pastor
Florentino V. Lee
Assignee (at issue)
Hughes Aircraft Company
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.