Granted Patent
Utility
US 5,342,808 · App. 08/028,643
Aperture size control for etched vias and metal contacts
Inventors:
Kristen Brigham, Gary W. Ray
Patented Case
View Patent ↗
Granted: Aug 30, 1994
Filed: Mar 9, 1993
Inventors
Kristen Brigham
Gary W. Ray
Assignee (at issue)
Hewlett-Packard Company, L.P.
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.