G11C 2211/401 Indexing scheme relating to cells needing refreshing or charge regeneration, i.e. dynamic cells
Full Title
Indexing scheme relating to digital stores characterized by the use of particular electric or magnetic storage elements; Storage elements therefor > Indexing scheme relating to cells needing refreshing or charge regeneration, i.e. dynamic cells
Filing statistics
CPC G11C 2211/401 belongs to the parent subclass G11C, which recorded 152,594 patent applications worldwide between 2013 and 2023. Annual filings grew from 10,826 in 2013 to 13,151 in 2023 (+21%), peaking at 17,166 applications in 2021. The most active applicants in class G11 are MICRON TECHNOLOGY (12,397 applications), SAMSUNG ELECTRONICS COMPANY (12,238 applications) and SK HYNIX (11,371 applications).
Source: EPO PATSTAT, worldwide filings
3 direct subcodes
Child Classifications
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- G11C 2211/4013 Memory devices with multiple cells per bit, e.g. twin-cells
- G11C 2211/4016 Memory devices with silicon-on-insulator cells
- G11C 2211/406 Refreshing of dynamic cells
Top Applicants
Top 10 applicants by patent filingsfor class G11, 2013–2023, worldwide · Source: EPO PATSTAT
- MICRON TECHNOLOGY US 12,397
- SAMSUNG ELECTRONICS COMPANY KR 12,238
- SK HYNIX KR 11,371
- TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY TW 4,601
- INTEL CORPORATION US 3,874
- IBM (INTERNATIONAL BUSINESS MACHINES CORPORATION) US 3,866
- SANDISK TECHNOLOGIES US 3,151
- SK HYNIX 3,143
- SAMSUNG ELECTRONICS COMPANY 3,073
- WESTERN DIGITAL TECHNOLOGIES US 2,961