Granted Patent
Utility
US 6,723,601 · App. 10/321,815
Method for manufacturing semiconductor memory device using hemispherical grain silicon
Inventors:
Se Min Lee, Dong Hwan Kim, Keun-Il Lee
Patented Case
View Patent ↗
Granted: Apr 20, 2004
Filed: Dec 18, 2002
Inventors
Se Min Lee
Dong Hwan Kim
Keun-Il Lee
Assignee (at issue)
Hyundai Electronics Industries Co. Ltd.
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.