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IPC Main Group
G11C 19/00

Digital stores in which the information is moved stepwise, e.g. shift registers

Introduced: September 1968

Last revised: January 2006

Classification Context

Section:
PHYSICS
Class:
INFORMATION STORAGE
Subclass:
STATIC STORES

Filing statistics

IPC G11C 19/00 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

10 direct subcodes

Child Classifications

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  • G11C 19/12 using non-linear reactive devices in resonant circuits
  • G11C 19/14 using magnetic elements in combination with active elements, e.g. discharge tubes, semiconductor elements
  • G11C 19/18 using capacitors as main elements of the stages
  • G11C 19/2 using discharge tubes
  • G11C 19/28 using semiconductor elements
  • G11C 19/3 using opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled
  • G11C 19/32 using super-conductive elements
  • G11C 19/38 two-dimensional [2D], e.g. horizontal and vertical shift registers

Top Applicants

Top 10 applicants by patent filingsfor class G11, 2013–2023, worldwide · Source: EPO PATSTAT

  1. MICRON TECHNOLOGY US 10,574
  2. SK HYNIX KR 9,138
  3. SAMSUNG ELECTRONICS COMPANY KR 9,004
  4. TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY TW 3,739
  5. IBM (INTERNATIONAL BUSINESS MACHINES CORPORATION) US 3,443
  6. INTEL CORPORATION US 2,952
  7. SANDISK TECHNOLOGIES US 2,905
  8. WESTERN DIGITAL TECHNOLOGIES US 2,630
  9. TOSHIBA CORPORATION JP 2,593
  10. SEAGATE TECHNOLOGY US 2,472