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IPC Subgroup
H04B 17/11

for calibration

Introduced: January 2015

Full Title

Monitoring; Testing > of transmitters > for calibration

Classification Context

Section:
ELECTRICITY
Class:
ELECTRIC COMMUNICATION TECHNIQUE
Subclass:
TRANSMISSION

3 direct subcodes

Child Classifications

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  • H04B 17/12 of transmit antennas, e.g. of amplitude or phase
  • H04B 17/13 of power amplifiers, e.g. of gain or non-linearity
  • H04B 17/14 of the whole transmission and reception path, e.g. self-test loop-back

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