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Search for IPC and CPC classification codes or keywords
DIFF Subgroup
G06F 12/0866

for peripheral storage systems, e.g. disk cache

Introduced: January 2016

Full Title

Full titles differ between systems:

IPC:

Accessing, addressing or allocating within memory systems or architectures > Addressing or allocation; Relocation > in hierarchically structured memory systems, e.g. virtual memory systems > Addressing of a memory level in which the access to the desired data or data block requires associative addressing means, e.g. caches > for peripheral storage systems, e.g. disk cache

CPC:

Accessing, addressing or allocating within memory systems or architectures (digital input from, or digital output to record carriers, e.g. to disk storage units, G06F3/06) > Addressing or allocation; Relocation (program address sequencing G06F9/00; arrangements for selecting an address in a digital store G11C8/00) > in hierarchically structured memory systems, e.g. virtual memory systems > Addressing of a memory level in which the access to the desired data or data block requires associative addressing means, e.g. caches > for peripheral storage systems, e.g. disk cache

IPC and CPC are identically structured here. All 3 subcodes exist in both systems.

IPC defines codes here since 2016.

Child Classifications

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  • G06F 12/0868 Data transfer between cache memory and other subsystems, e.g. storage devices or host systems since 2016 IPC+CPC Available in IPC and CPC
  • G06F 12/0871 Allocation or management of cache space since 2016 IPC+CPC Available in IPC and CPC
  • G06F 12/0873 Mapping of cache memory to specific storage devices or parts thereof since 2016 IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class G06,2013–2023, worldwide · Source: EPO PATSTAT

  1. SAMSUNG ELECTRONICS COMPANY KR 66,669
  2. IBM (INTERNATIONAL BUSINESS MACHINES CORPORATION) US 62,313
  3. MICROSOFT TECHNOLOGY LICENSING US 41,918
  4. GOOGLE US 32,969
  5. SGCC(STATE GRID CORPORATION OF CHINA) 30,822
  6. INTEL CORPORATION US 30,010
  7. TENCENT TECHNOLOGY (SHENZHEN) COMPANY 28,235
  8. HUAWEI TECHNOLOGIES COMPANY CN 26,079
  9. APPLE US 21,891
  10. HUAWEI TECHNOLOGIES COMPANY 20,505

Top Applicants (CPC)

Class G06,2013–2023, worldwide · Source: EPO PATSTAT

  1. SAMSUNG ELECTRONICS COMPANY KR 76,952
  2. IBM (INTERNATIONAL BUSINESS MACHINES CORPORATION) US 62,841
  3. MICROSOFT TECHNOLOGY LICENSING US 44,778
  4. GOOGLE US 35,735
  5. INTEL CORPORATION US 32,087
  6. HUAWEI TECHNOLOGIES COMPANY CN 30,572
  7. TENCENT TECHNOLOGY (SHENZHEN) COMPANY 25,023
  8. APPLE US 23,482
  9. SGCC(STATE GRID CORPORATION OF CHINA) 22,548
  10. HUAWEI TECHNOLOGIES COMPANY 20,917