Granted Patent
Utility
US 6,437,449 · App. 09/828,396
Making semiconductor devices having stacked dies with biased back surfaces
Inventor:
Donald C. Foster
Patented Case
View Patent ↗
Granted: Aug 20, 2002
Filed: Apr 6, 2001
Inventor
Donald C. Foster
Assignee (at issue)
Amkor Technology, 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.