Granted Patent
Utility
US 4,859,619 · App. 07/219,924
EPROM fabrication process forming tub regions for high voltage devices
Inventors:
Tsung-Ching Wu, Geeng-Chuan Chern, James Hu
Patented Case
View Patent ↗
Granted: Aug 22, 1989
Filed: Jul 15, 1988
Inventors
Tsung-Ching Wu
Geeng-Chuan Chern
James Hu
Assignee (at issue)
Atmel Corporation
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.