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IPC Subgroup
H04B 1/1

Means associated with receiver for limiting or suppressing noise or interference

Introduced: September 1968

Last revised: January 2006

Full Title

Details of transmission systems, not covered by a single one of groups; Details of transmission systems not characterised by the medium used for transmission > Receivers > Means associated with receiver for limiting or suppressing noise or interference

Classification Context

Section:
ELECTRICITY
Class:
ELECTRIC COMMUNICATION TECHNIQUE
Subclass:
TRANSMISSION

2 direct subcodes

Child Classifications

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  • H04B 1/12 Neutralising, balancing, or compensation arrangements
  • H04B 1/14 Automatic detuning arrangements

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