• All sections
• H - Electricity
• H01L - Semiconductor devices not covered by class
• H01L 27/1157 - Electrically programmable read-only memories; Multistep manufacturing processes therefor with charge-trapping gate insulators, e.g. MNOS or NROM characterised by the memory core region with cell select transistors, e.g. NAND

Patent holdings for IPC class H01L 27/1157

Total number of patents in this class: 3296

10-year publication summary

Principal owners for this class