CPC Main Group
H04B 7/00 Radio transmission systems, i.e. using radiation field (H04B10/00, H04B15/00 take precedence)
8 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- H04B 7/005 Control of transmission; Equalising
- H04B 7/01 Reducing phase shift
- H04B 7/015 Reducing echo effects
- H04B 7/02 Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas (RAKE receivers H04B1/7115)
- H04B 7/14 Relay systems
- H04B 7/22 Scatter propagation systems
- H04B 7/24 for communication between two or more posts (wireless communication networks H04W)
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