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DIFF Main Group
G11C 8/00

Arrangements for selecting an address in a digital store (for stores using transistors G11C11/407, G11C11/413)

Introduced: July 1974

Title

Titles differ between systems:

IPC: Arrangements for selecting an address in a digital store

CPC: Arrangements for selecting an address in a digital store (for stores using transistors G11C11/407, G11C11/413)

Full Title

Full titles differ between systems:

IPC:

Arrangements for selecting an address in a digital store

CPC:

Arrangements for selecting an address in a digital store (for stores using transistors G11C11/407, G11C11/413)

Of 11 combined children, 9 exist in both systems.

1 codes are CPC-only extensions, 1 exist only in IPC.

IPC defines codes here since 1974.

Child Classifications

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  • G11C 8/005 CPC only CPC only
  • G11C 8/02 using selecting matrix since 1974 IPC only IPC only
  • G11C 8/04 using a sequential addressing device, e.g. shift register, counter since 1990 IPC+CPC Available in IPC and CPC
  • G11C 8/06 Address interface arrangements, e.g. address buffers since 2000 IPC+CPC Available in IPC and CPC
  • G11C 8/08 Word line control circuits, e.g. drivers, boosters, pull-up circuits, pull-down circuits, precharging circuits, for word lines since 2000 IPC+CPC Available in IPC and CPC
  • G11C 8/10 Decoders since 2000 IPC+CPC Available in IPC and CPC
  • G11C 8/12 Group selection circuits, e.g. for memory block selection, chip selection, array selection since 2000 IPC+CPC Available in IPC and CPC
  • G11C 8/14 Word line organisation; Word line lay-out since 2000 IPC+CPC Available in IPC and CPC
  • G11C 8/16 Multiple access memory array, e.g. addressing one storage element via at least two independent addressing line groups since 2000 IPC+CPC Available in IPC and CPC
  • G11C 8/18 Address timing or clocking circuits; Address control signal generation or management, e.g. for row address strobe [RAS] or column address strobe [CAS] signals since 2000 IPC+CPC Available in IPC and CPC
  • G11C 8/20 Address safety or protection circuits, i.e. arrangements for preventing unauthorized or accidental access since 2000 IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

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

Top Applicants (CPC)

Class G11,2013–2023, worldwide · Source: EPO PATSTAT

  1. MICRON TECHNOLOGY US 12,397
  2. SAMSUNG ELECTRONICS COMPANY KR 12,238
  3. SK HYNIX KR 11,371
  4. TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY TW 4,601
  5. INTEL CORPORATION US 3,874
  6. IBM (INTERNATIONAL BUSINESS MACHINES CORPORATION) US 3,866
  7. SANDISK TECHNOLOGIES US 3,151
  8. SK HYNIX 3,143
  9. SAMSUNG ELECTRONICS COMPANY 3,073
  10. WESTERN DIGITAL TECHNOLOGIES US 2,961