Granted Patent
Utility
US 4,746,621 · App. 06/938,498
Planar tungsten interconnect
Inventors:
David C. Thomas, S. Simon Wong
Patented Case
View Patent ↗
Granted: May 24, 1988
Filed: Dec 5, 1986
Inventors
David C. Thomas
S. Simon Wong
Assignee (at issue)
Cornell Research Foundation, 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.