Granted Patent
Utility
US 5,909,621 · App. 08/795,789
Single-side corrugated cylindrical capacitor structure of high density DRAMs
Inventors:
Liang-Choo Hsia, Thomas Chang
Patented Case
View Patent ↗
Granted: Jun 1, 1999
Filed: Feb 5, 1997
Inventors
Liang-Choo Hsia
Thomas Chang
Assignee (at issue)
MOSEL VITELIC 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.