CPC Subgroup Additional Only
H04J 2203/0073 Services, e.g. multimedia, GOS, QOS
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 > Services, e.g. multimedia, GOS, QOS
6 direct subcodes
Child Classifications
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- H04J 2203/0075 Connection-oriented
- H04J 2203/0076 Channel characteristics, e.g. BER, error detection, error correction, delay, jitter
- H04J 2203/0078 Support of N-ISDN
- H04J 2203/008 Support of video
- H04J 2203/0082 Interaction of SDH with non-ATM protocols
- H04J 2203/0087 Support of voice
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