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IPC Subgroup
H04W 4/2

Services signalling; Auxiliary data signalling, i.e. transmitting data via a non-traffic channel

Introduced: January 2009

Last revised: January 2018

Full Title

Services specially adapted for wireless communication networks; Facilities therefor > Services signalling; Auxiliary data signalling, i.e. transmitting data via a non-traffic channel

Classification Context

Section:
ELECTRICITY
Class:
ELECTRIC COMMUNICATION TECHNIQUE
Subclass:
WIRELESS COMMUNICATION NETWORKS

Filing statistics

IPC H04W 4/2 belongs to the parent subclass H04W, which recorded 1,086,704 patent applications worldwide between 2013 and 2023. Annual filings grew from 75,401 in 2013 to 101,506 in 2023 (+35%), peaking at 118,355 applications in 2021. 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

Additional Content

Application signalling information means information produced and delivered by the network to the user, in order to control operation or inform the user (battery status, application usage, metering information: Home Energy Monitor, Google Powermeter and Apple Smart-Home Energy Management).

2 direct subcodes

Child Classifications

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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