Method of making increased-density flash EPROM that utilizes a series of planarized, self-aligned, intermediate strips of conductive material to contact the drain regions

Granted: Dec 31, 1996 Filed: Jun 1, 1995

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.