Granted Patent
Utility
US 4,920,403 · App. 07/338,682
Selective tungsten interconnection for yield enhancement
Inventors:
Yu C. Chow, Kuan-Yang Liao, Maw-Rong Chin, Charles S. Rhoades
Patented Case
View Patent ↗
Granted: Apr 24, 1990
Filed: Apr 17, 1989
Inventors
Yu C. Chow
Kuan-Yang Liao
Maw-Rong Chin
Charles S. Rhoades
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.