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PCE
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DIFF Subgroup
A61B 5/053

Measuring electrical impedance or conductance of a portion of the body

Introduced: January 2000

Full Title

Full titles differ between systems:

IPC:

Measuring for diagnostic purposes; Identification of persons > Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves > Measuring electrical impedance or conductance of a portion of the body

CPC:

Measuring for diagnostic purposes (radiation diagnosis A61B6/00; diagnosis by ultrasonic, sonic or infrasonic waves A61B8/00); Identification of persons > Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves (measuring movement of the entire body or parts thereof A61B5/11; detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof A61B5/24) > Measuring electrical impedance or conductance of a portion of the body

IPC and CPC are identically structured here. All 6 subcodes exist in both systems.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 2021.

Child Classifications

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  • A61B 5/0534 for testing vitality of teeth since 2021 IPC+CPC Available in IPC and CPC
  • A61B 5/0535 Impedance plethysmography (for measuring blood flow A61B5/0295) since 2021 IPC+CPC Available in IPC and CPC
  • A61B 5/0536 Impedance imaging, e.g. by tomography since 2021 IPC+CPC Available in IPC and CPC
  • A61B 5/0537 Measuring body composition by impedance, e.g. tissue hydration or fat content since 2021 IPC+CPC Available in IPC and CPC
  • A61B 5/0538 invasively, e.g. using a catheter since 2021 IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class A61,2013–2023, worldwide · Source: EPO PATSTAT

  1. PHILIPS ELECTRONICS NL 18,523
  2. NOVARTIS CH 14,253
  3. COVIDIEN US 13,953
  4. ROCHE CH 12,005
  5. CHINESE ACADEMY OF SCIENCES 11,955
  6. UNIVERSITY OF CALIFORNIA US 11,692
  7. HARVARD UNIVERSITY US 11,596
  8. L'OREAL FR 11,593
  9. P&G (PROCTER & GAMBLE COMPANY) US 11,297
  10. OLYMPUS CORPORATION JP 9,594

Top Applicants (CPC)

Class A61,2013–2023, worldwide · Source: EPO PATSTAT

  1. PHILIPS ELECTRONICS NL 20,621
  2. NOVARTIS CH 15,792
  3. ROCHE CH 14,303
  4. COVIDIEN US 13,862
  5. HARVARD UNIVERSITY US 13,454
  6. UNIVERSITY OF CALIFORNIA US 12,798
  7. P&G (PROCTER & GAMBLE COMPANY) US 12,140
  8. L'OREAL FR 11,800
  9. OLYMPUS CORPORATION JP 9,894
  10. BOSTON SCIENTIFIC SCIMED US 9,513