• All sections
• H - Electricity
• H01L - Semiconductor devices not covered by class
• H01L 21/48 - Manufacture or treatment of parts, e.g. containers, prior to assembly of the devices, using processes not provided for in a single one of the groups

Patent holdings for IPC class H01L 21/48

Total number of patents in this class: 10774

10-year publication summary

Principal owners for this class