CPC Subgroup Additional Only
H04J 2203/0001 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
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
10 direct subcodes
Child Classifications
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- H04J 2203/0003 Switching fabrics, e.g. transport network, control network
- H04J 2203/0028 Local loop
- H04J 2203/0046 User Network Interface
- H04J 2203/0051 Network Node Interface, e.g. tandem connections, transit switching
- H04J 2203/0057 Operations, administration and maintenance [OAM]
- H04J 2203/0062 Testing
- H04J 2203/0064 Admission Control
- H04J 2203/0073 Services, e.g. multimedia, GOS, QOS
- H04J 2203/0089 Multiplexing, e.g. coding, scrambling, SONET
- H04J 2203/0098 Traffic aspects, e.g. arbitration, load balancing, smoothing, buffer management
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