DIFF Subgroup
H04L 61/256 NAT traversal
Introduced: January 2022
Full Title
Network arrangements, protocols or services for addressing or naming > Mapping addresses > of the same type > Translation of Internet protocol [IP] addresses > NAT traversal
Of 7 combined children, 6 exist in both systems.
1 codes are CPC-only extensions.
IPC defines codes here since 2022.
Child Classifications
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- H04L 61/2567 for reachability, e.g. inquiring the address of a correspondent behind a NAT server since 2022 IPC+CPC Available in IPC and CPC
- H04L 61/2575 using address mapping retrieval, e.g. simple traversal of user datagram protocol through session traversal utilities for NAT [STUN] since 2022 IPC+CPC Available in IPC and CPC
- H04L 61/2582 through control of the NAT server, e.g. using universal plug and play [UPnP] since 2022 IPC+CPC Available in IPC and CPC
- H04L 61/2589 over a relay server, e.g. traversal using relay for network address translation [TURN] since 2022 IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
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
Top Applicants (CPC)
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