G11C 2211/406 Refreshing of 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 > Refreshing of dynamic cells
Filing statistics
CPC G11C 2211/406 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
7 direct subcodes
Child Classifications
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- G11C 2211/4061 Calibration or ate or cycle tuning
- G11C 2211/4062 Parity or ECC in refresh operations
- G11C 2211/4063 Interleaved refresh operations
- G11C 2211/4065 Low level details of refresh operations
- G11C 2211/4066 Pseudo-SRAMs
- G11C 2211/4067 Refresh in standby or low power modes
- G11C 2211/4068 Voltage or leakage in refresh operations
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