CPC Subgroup Additional Only
H04Q 2209/75 by polling or interrogating the sub-stations
Full Title
Arrangements in telecontrol or telemetry systems > Arrangements in the main station, i.e. central controller > by polling or interrogating the sub-stations
2 direct subcodes
Child Classifications
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- H04Q 2209/753 where the polling of the sub-stations is synchronous
- H04Q 2209/756 where the polling of the sub-stations is cyclic, e.g. round-robin
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