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PCE
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DIFF Subgroup
G11C 11/061

using elements with single aperture or magnetic loop for storage, one element per bit, and for destructive read-out

Introduced: July 1974

Full Title

Full titles differ between systems:

IPC:

Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor > using magnetic elements > using single-aperture storage elements, e.g. ring core; using multi-aperture plates in which each individual aperture forms a storage element > using elements with single aperture or magnetic loop for storage, one element per bit, and for destructive read-out

CPC:

Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor (G11C14/00 - G11C21/00 take precedence) > using magnetic elements > using single-aperture storage elements, e.g. ring core; using multi-aperture plates in which each individual aperture forms a storage element > using elements with single aperture or magnetic loop for storage, one element per bit, and for destructive read-out

IPC and CPC are identically structured here. All 2 subcodes exist in both systems.

IPC defines codes here since 1974.

Child Classifications

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  • G11C 11/063 bit-organised, such as 2L/2D-organisation or three-dimensional [3D]-organisation, i.e. for selection of an element by means of at least two coincident partial currents both for reading and for writing since 1974 IPC+CPC Available in IPC and CPC
  • G11C 11/065 word-organised, such as two-dimensional [2D]-organisation, or linear selection, i.e. for selection of all the elements of a word by means of a single full current for reading since 1974 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