IPC Subgroup
H04L 49/1 characterised by the switching fabric construction
Introduced: January 2022
Full Title
Packet switching elements > characterised by the switching fabric construction
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC COMMUNICATION TECHNIQUE
- Subclass:
- TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
8 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- H04L 49/101 using crossbar or matrix
- H04L 49/102 using shared medium, e.g. bus or ring
- H04L 49/103 using a shared central buffer; using a shared memory
- H04L 49/104 Asynchronous transfer mode [ATM] switching fabrics
- H04L 49/109 Integrated on microchip, e.g. switch-on-chip
- H04L 49/111 Switch interfaces, e.g. port details
- H04L 49/112 Switch control, e.g. arbitration
- H04L 49/113 Arrangements for redundant switching, e.g. using parallel planes
Top Applicants
Top 10 applicants by patent filingsfor class H04, 2013–2023, worldwide · Source: EPO PATSTAT
- QUALCOMM US 97,396
- HUAWEI TECHNOLOGIES COMPANY CN 96,502
- SAMSUNG ELECTRONICS COMPANY KR 86,981
- TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) SE 55,869
- HUAWEI TECHNOLOGIES COMPANY 55,349
- LG ELECTRONICS KR 53,649
- CANON 33,341
- SONY CORPORATION JP 32,761
- ZTE CORPORATION CN 32,274
- GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORPORATION 28,327