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IPC Subgroup
H04J 3/24

in which the allocation is indicated by an address

Introduced: January 1985

Last revised: January 2006

Full Title

Time-division multiplex systems > in which the allocation is indicated by an address

Classification Context

Section:
ELECTRICITY
Class:
ELECTRIC COMMUNICATION TECHNIQUE
Subclass:
MULTIPLEX COMMUNICATION

Filing statistics

IPC H04J 3/24 belongs to the parent subclass H04J, which recorded 58,468 patent applications worldwide between 2013 and 2023. Annual filings declined from 7,470 in 2013 to 3,512 in 2023 (-53%). The most active applicants in class H04 are QUALCOMM (97,396 applications), HUAWEI TECHNOLOGIES COMPANY (96,502 applications) and SAMSUNG ELECTRONICS COMPANY (86,981 applications).

Source: EPO PATSTAT, worldwide filings

1 direct subcode

Child Classifications

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  • H04J 3/26 in which the information and the address are simultaneously transmitted

Top Applicants

Top 10 applicants by patent filingsfor 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