Granted Patent
Utility
US 6,800,563 · App. 09/975,163
Forming tapered lower electrode phase-change memories
Inventor:
Daniel Xu
Patented Case
View Patent ↗
Granted: Oct 5, 2004
Filed: Oct 11, 2001
Inventor
Daniel Xu
Assignee (at issue)
Ovonyx 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.