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IPC Main Group
G11C 29/00

Checking stores for correct operation; Testing stores during standby or offline operation

Introduced: September 1968

Last revised: January 2006

Classification Context

Section:
PHYSICS
Class:
INFORMATION STORAGE
Subclass:
STATIC STORES

5 direct subcodes

Child Classifications

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  • G11C 29/02 Detection or location of defective auxiliary circuits, e.g. defective refresh counters
  • G11C 29/52 Protection of memory contents; Detection of errors in memory contents
  • G11C 29/54 Arrangements for designing test circuits, e.g. design for test [DFT] tools
  • G11C 29/56 External testing equipment for static stores, e.g. automatic test equipment [ATE]; Interfaces therefor

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