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DIFF Subgroup
D06F 33/52

Control of the operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry

Introduced: January 2020

Full Title

Full titles differ between systems:

IPC:

Control of operations performed in washing machines or washer-dryers > Control of washer-dryers characterised by the purpose or target of the control > Control of the operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry

CPC:

Control of operations performed in washing machines or washer-dryers (D06F31/00 takes precedence; details of control systems therefor D06F34/00; control of operations performed in domestic laundry dryers D06F58/32) > Control of washer-dryers characterised by the purpose or target of the control > Control of the operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry

IPC and CPC are identically structured here. All 9 subcodes exist in both systems.

IPC defines codes here since 2020.

Child Classifications

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  • D06F 33/54 of water filling since 2020 IPC+CPC Available in IPC and CPC
  • D06F 33/56 of washing since 2020 IPC+CPC Available in IPC and CPC
  • D06F 33/57 of metering of detergents or additives since 2020 IPC+CPC Available in IPC and CPC
  • D06F 33/58 of rinsing since 2020 IPC+CPC Available in IPC and CPC
  • D06F 33/60 of centrifugal separation of water from the laundry since 2020 IPC+CPC Available in IPC and CPC
  • D06F 33/62 of draining since 2020 IPC+CPC Available in IPC and CPC
  • D06F 33/65 of conditioning or finishing phases, e.g. for smoothing or removing creases since 2020 IPC+CPC Available in IPC and CPC
  • D06F 33/68 of the sequence of washing and drying operations since 2020 IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class D06,2013–2023, worldwide · Source: EPO PATSTAT

  1. QINGDAO HAIER WASHING MACHINE COMPANY 10,520
  2. HAIER SMART HOME 8,532
  3. LG ELECTRONICS KR 7,853
  4. WUXI LITTLE SWAN COMPANY 5,749
  5. QINGDAO HAIER WASHING MACHINE COMPANY CN 2,905
  6. BSH (BOSCH UND SIEMENS HAUSGERAETE) DE 2,785
  7. SAMSUNG ELECTRONICS COMPANY KR 2,662
  8. GREE ELECTRIC APPLIANCES 1,701
  9. PANASONIC INTELLECTUAL PROPERTY 1,391
  10. MIELE DE 1,374

Top Applicants (CPC)

Class D06,2013–2023, worldwide · Source: EPO PATSTAT

  1. LG ELECTRONICS KR 7,955
  2. QINGDAO HAIER WASHING MACHINE COMPANY 7,190
  3. HAIER SMART HOME 5,471
  4. QINGDAO HAIER WASHING MACHINE COMPANY CN 2,962
  5. BSH (BOSCH UND SIEMENS HAUSGERAETE) DE 2,870
  6. WUXI LITTLE SWAN COMPANY 2,869
  7. SAMSUNG ELECTRONICS COMPANY KR 2,731
  8. MIELE DE 1,371
  9. WHIRLPOOL CORPORATION US 1,285
  10. ELECTROLUX APPLIANCES SE 1,261