CPC Main Group
H04L 49/00 Packet switching elements
14 direct subcodes
Child Classifications
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- H04L 49/10 characterised by the switching fabric construction
- H04L 49/15 Interconnection of switching modules
- H04L 49/20 Support for services
- H04L 49/25 Routing or path finding in a switch fabric
- H04L 49/35 Switches specially adapted for specific applications
- H04L 49/40 Constructional details, e.g. power supply, mechanical construction or backplane
- H04L 49/45 Arrangements for providing or supporting expansion
- H04L 49/50 Overload detection or protection within a single switching element
- H04L 49/55 Prevention, detection or correction of errors
- H04L 49/60 Software-defined switches
- H04L 49/65 Re-configuration of fast packet switches
- H04L 49/90 Buffering arrangements
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