Granted Patent
Utility
US 4,662,064 · App. 06/762,521
Method of forming multi-level metallization
Inventors:
Sheng Teng Hsu, Doris W. Flatley, Ronald J. Johansson
Patented Case
View Patent ↗
Granted: May 5, 1987
Filed: Aug 5, 1985
Inventors
Sheng Teng Hsu
Doris W. Flatley
Ronald J. Johansson
Assignee (at issue)
RCA Corporation
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.