CPC Main Group Additional Only
H04B 2210/00 Indexing scheme relating to optical transmission systems
7 direct subcodes
Child Classifications
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- H04B 2210/003 Devices including multiple stages, e.g., multi-stage optical amplifiers or dispersion compensators
- H04B 2210/006 Devices for generating or processing an RF signal by optical means
- H04B 2210/07 Monitoring an optical transmission system using a supervisory signal
- H04B 2210/08 Shut-down or eye-safety
- H04B 2210/25 Distortion or dispersion compensation
- H04B 2210/516 Optical conversion of optical modulation formats, e.g., from optical ASK to optical PSK
- H04B 2210/517 Optical NRZ to RZ conversion, or vice versa
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