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DIFF Subgroup
H04M 1/725

Cordless telephones (user interfaces specially adapted therefor H04M1/724)

Introduced: January 2000

Title

Titles differ between systems:

IPC: Cordless telephones

CPC: Cordless telephones (user interfaces specially adapted therefor H04M1/724)

Full Title

Full titles differ between systems:

IPC:

Substation equipment, e.g. for use by subscribers > Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection > Cordless telephones

CPC:

Substation equipment, e.g. for use by subscribers (subscriber services or facilities provided at exchanges H04M3/00; prepayment telephone coin boxes H04M17/00; current supply arrangements H04M19/08) > Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection > Cordless telephones (user interfaces specially adapted therefor H04M1/724)

Additional Content IPC

User interfaces specially adapted for cordless telephones

IPC and CPC are identically structured here. All 5 subcodes exist in both systems.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 2000.

Child Classifications

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  • H04M 1/727 Identification code transfer arrangements since 2000 IPC+CPC Available in IPC and CPC
  • H04M 1/73 Battery saving arrangements since 2000 IPC+CPC Available in IPC and CPC
  • H04M 1/733 with a plurality of base stations connected to a plurality of lines since 2000 IPC+CPC Available in IPC and CPC
  • H04M 1/737 Characterised by transmission of electromagnetic waves other than radio waves, e.g. infrared waves since 2000 IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class H04,2013–2023, worldwide · Source: EPO PATSTAT

  1. QUALCOMM US 97,396
  2. HUAWEI TECHNOLOGIES COMPANY CN 96,502
  3. SAMSUNG ELECTRONICS COMPANY KR 86,981
  4. TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) SE 55,869
  5. HUAWEI TECHNOLOGIES COMPANY 55,349
  6. LG ELECTRONICS KR 53,649
  7. CANON 33,341
  8. SONY CORPORATION JP 32,761
  9. ZTE CORPORATION CN 32,274
  10. GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORPORATION 28,327

Top Applicants (CPC)

Class H04,2013–2023, worldwide · Source: EPO PATSTAT

  1. HUAWEI TECHNOLOGIES COMPANY CN 101,476
  2. QUALCOMM US 101,139
  3. SAMSUNG ELECTRONICS COMPANY KR 96,655
  4. TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) SE 57,744
  5. LG ELECTRONICS KR 55,253
  6. HUAWEI TECHNOLOGIES COMPANY 54,181
  7. SONY CORPORATION JP 35,309
  8. ZTE CORPORATION CN 32,950
  9. INTEL CORPORATION US 27,533
  10. GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORPORATION CN 27,498