IPC Main Group
G11C 17/00 Read-only memories programmable only once; Semi-permanent stores, e.g. manually-replaceable information cards
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- PHYSICS
- Class:
- INFORMATION STORAGE
- Subclass:
- STATIC STORES
Filing statistics
IPC G11C 17/00 belongs to the parent subclass G11C, which recorded 132,701 patent applications worldwide between 2013 and 2023. Annual filings grew from 10,722 in 2013 to 11,789 in 2023 (+10%), peaking at 14,304 applications in 2021. The most active applicants in class G11 are MICRON TECHNOLOGY (10,574 applications), SK HYNIX (9,138 applications) and SAMSUNG ELECTRONICS COMPANY (9,004 applications).
Source: EPO PATSTAT, worldwide filings
Related Keywords
use of HOLOGRAPHY for digital data storagePROMREAD-ONLY stores [= static digital stores]static STORES of PROM type
5 direct subcodes
Child Classifications
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- G11C 17/02 using magnetic or inductive elements
- G11C 17/04 using capacitive elements
- G11C 17/06 using diode elements
- G11C 17/08 using semiconductor devices, e.g. bipolar elements
- G11C 17/14 in which contents are determined by selectively establishing, breaking or modifying connecting links by permanently altering the state of coupling elements, e.g. PROM
Top Applicants
Top 10 applicants by patent filingsfor class G11, 2013–2023, worldwide · Source: EPO PATSTAT
- MICRON TECHNOLOGY US 10,574
- SK HYNIX KR 9,138
- SAMSUNG ELECTRONICS COMPANY KR 9,004
- TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY TW 3,739
- IBM (INTERNATIONAL BUSINESS MACHINES CORPORATION) US 3,443
- INTEL CORPORATION US 2,952
- SANDISK TECHNOLOGIES US 2,905
- WESTERN DIGITAL TECHNOLOGIES US 2,630
- TOSHIBA CORPORATION JP 2,593
- SEAGATE TECHNOLOGY US 2,472