CPC Main Group
H04B 1/00 Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
Filing statistics
CPC H04B 1/00 belongs to the parent subclass H04B, which recorded 474,755 patent applications worldwide between 2013 and 2023. Annual filings grew from 34,313 in 2013 to 39,995 in 2023 (+17%), peaking at 50,387 applications in 2020. The most active applicants in class H04 are HUAWEI TECHNOLOGIES COMPANY (101,476 applications), QUALCOMM (101,139 applications) and SAMSUNG ELECTRONICS COMPANY (96,655 applications).
Source: EPO PATSTAT, worldwide filings
14 direct subcodes
Child Classifications
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- H04B 1/02 Transmitters
- H04B 1/06 Receivers
- H04B 1/38 Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B 1/59 Responders; Transponders
- H04B 1/60 Supervising unattended repeaters
- H04B 1/62 for providing a predistortion of the signal in the transmitter and corresponding correction in the receiver, e.g. for improving the signal/noise ratio
- H04B 1/66 for reducing bandwidth of signals; for improving efficiency of transmission (H04B1/68 takes precedence)
- H04B 1/68 for wholly or partially suppressing the carrier or one side band
- H04B 1/69 Spread spectrum techniques
- H04B 1/72 Circuits or components for simulating antennas, e.g. dummy antennas
- H04B 1/74 for increasing reliability, e.g. using redundant or spare channels or apparatus
- H04B 1/76 Pilot transmitters or receivers for control of transmission or for equalising
Top Applicants
Top 10 applicants by patent filingsfor class H04, 2013–2023, worldwide · Source: EPO PATSTAT
- HUAWEI TECHNOLOGIES COMPANY CN 101,476
- QUALCOMM US 101,139
- SAMSUNG ELECTRONICS COMPANY KR 96,655
- TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) SE 57,744
- LG ELECTRONICS KR 55,253
- HUAWEI TECHNOLOGIES COMPANY 54,181
- SONY CORPORATION JP 35,309
- ZTE CORPORATION CN 32,950
- INTEL CORPORATION US 27,533
- GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORPORATION CN 27,498