Granted Patent
Utility
US 6,136,645 · App. 08/979,112
Fabrication method for semiconductor memory device
Inventors:
Woun S Yang, Chang Jae Lee
Patented Case
View Patent ↗
Granted: Oct 24, 2000
Filed: Nov 26, 1997
Inventors
Woun S Yang
Chang Jae Lee
Assignee (at issue)
LG Semicon 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.