CPC Subgroup Additional Only
H04J 2203/0003 Switching fabrics, e.g. transport network, control network
Full Title
Aspects of optical multiplex systems other than those covered by H04J14/05 and H04J14/07 > Provisions for broadband connections in integrated services digital network using frames of the Optical Transport Network [OTN] or using synchronous transfer mode [STM], e.g. SONET, SDH > Switching fabrics, e.g. transport network, control network
7 direct subcodes
Child Classifications
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- H04J 2203/0005 Switching elements
- H04J 2203/0012 Switching modules and their interconnections
- H04J 2203/0019 Multicast/broadcast capabilities
- H04J 2203/0021 Control mechanisms
- H04J 2203/0023 Routing/path finding
- H04J 2203/0025 Peripheral units
- H04J 2203/0026 Physical details
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