Granted Patent
Utility
US 5,087,608 · App. 07/458,185
Environmental protection and patterning of superconducting perovskites
Inventors:
Siu-Wai Chan, Leonilda A. Farrow
Patented Case
View Patent ↗
Granted: Feb 11, 1992
Filed: Dec 28, 1989
Inventors
Siu-Wai Chan
Leonilda A. Farrow
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.