Granted Patent
Utility
US 6,172,921 · App. 09/426,725
Column redundancy circuit for semiconductor memory
Inventors:
San-Ha Park, Ju Han Kim, Hong Beom Pyeon
Patented Case
View Patent ↗
Granted: Jan 9, 2001
Filed: Oct 26, 1999
Inventors
San-Ha Park
Ju Han Kim
Hong Beom Pyeon
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.