Granted Patent
Utility
US 5,162,299 · App. 07/627,792
Preparation of superconducting oxide precursor materials by pyrolysis from concentrated nitric acid solution
Inventors:
Antonio C. Pastor, Luisa E. Gorre
Patented Case
View Patent ↗
Granted: Nov 10, 1992
Filed: Dec 14, 1990
Inventors
Antonio C. Pastor
Luisa E. Gorre
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.