Skip to content
PCE
Search Classifications
Search for IPC and CPC classification codes or keywords
DIFF Subgroup
A61K 31/568

substituted in positions 10 and 13 by a chain having at least one carbon atom, e.g. androstanes, e.g. testosterone

Introduced: January 2000

Title

Titles differ between systems:

IPC: substituted in positions 10 and 13 by a chain having at least one carbon atom, e.g. androstane, testosterone

CPC: substituted in positions 10 and 13 by a chain having at least one carbon atom, e.g. androstanes, e.g. testosterone

Full Title

Full titles differ between systems:

IPC:

Medicinal preparations containing organic active ingredients > Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids > not substituted in position 17 beta by a carbon atom, e.g. oestrane, oestradiol > substituted in positions 10 and 13 by a chain having at least one carbon atom, e.g. androstane, testosterone

CPC:

Medicinal preparations containing organic active ingredients > Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids > not substituted in position 17 beta by a carbon atom, e.g. estrane, estradiol > substituted in positions 10 and 13 by a chain having at least one carbon atom, e.g. androstanes, e.g. testosterone

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

IPC defines codes here since 2000.

Child Classifications

Navigate with arrow keys, Enter to open

  • A61K 31/5685 having an oxo group in position 17, e.g. androsterone since 2000 IPC+CPC Available in IPC and CPC
  • A61K 31/569 substituted in position 17 alpha, e.g. ethisterone since 2000 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