Granted Patent
Utility
US 5,981,341 · App. 08/986,160
Sidewall spacer for protecting tunnel oxide during isolation trench formation in self-aligned flash memory core
Inventors:
Unsoon Kim, Yowjuang W. Liu, Yu Sun, Angela T. Hui
Patented Case
View Patent ↗
Granted: Nov 9, 1999
Filed: Dec 5, 1997
Inventors
Unsoon Kim
Yowjuang W. Liu
Yu Sun
Angela T. Hui
Assignee (at issue)
Advanced Micro Devices, 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.