H04L 61/256
Nat traversal
Official title: NAT traversal
H04L61/256 (Nat traversal) appears on 1,873 US grants and 2,063 published applications in this corpus.
Search patents in H04L- Granted patents
- 1,873
- Published applications
- 2,063
- Assignees
- 622
- Inventors
- 3,314
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 7 | 0 |
| 2001 | 5 | 4 |
| 2002 | 7 | 47 |
| 2003 | 7 | 57 |
| 2004 | 17 | 45 |
| 2005 | 24 | 45 |
| 2006 | 41 | 78 |
| 2007 | 33 | 69 |
| 2008 | 44 | 88 |
| 2009 | 43 | 86 |
| 2010 | 64 | 75 |
| 2011 | 62 | 82 |
| 2012 | 77 | 88 |
| 2013 | 92 | 104 |
| 2014 | 97 | 102 |
| 2015 | 111 | 97 |
| 2016 | 107 | 112 |
| 2017 | 125 | 116 |
| 2018 | 131 | 93 |
| 2019 | 113 | 158 |
| 2020 | 144 | 96 |
| 2021 | 130 | 101 |
| 2022 | 96 | 89 |
| 2023 | 92 | 79 |
| 2024 | 95 | 80 |
| 2025 | 71 | 48 |
| 2026 | 34 | 24 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H04L 61/2575Using address mapping retrieval548
- H04L 61/2564For a higher-layer protocol442
- H04L 61/2567For reachability352
- H04L 61/2589Over a relay server306
- H04L 61/2585Through application level gateway [alg]182
- H04L 61/2578Without involvement of the nat server150
- H04L 61/2582Through control of the nat server110
Recent patents
- Proxy device with delay measuring capability22 Sep 2026US 12,744,828 B2Bright Data Ltd.
- Servicing both virtualized and non-virtualized customer premises equipment in a unified platform15 Sep 2026US 12,739,223 B1Harmonic, Inc.
- Content fetching by mobile device selected based on battery charge level15 Sep 2026US 12,739,296 B2Bright Data Ltd.
- Binding flows to unique addresses or ports25 Aug 2026US 12,719,827 B2Cisco Technology, Inc.
- Content fetching by mobile device in a state based on resource utilization level25 Aug 2026US 12,719,945 B2Bright Data Ltd.
- Enhanced visibility of devices behind cellular routers1 Oct 2026US 2026/0303565 A1
- System and Method for Improving Content Fetching by Selecting Tunnel Devices1 Oct 2026US 2026/0303681 A1Bright Data Ltd.
- Application-Agnostic Puncturing of Network Address Translation (NAT) Services17 Sep 2026US 2026/0281077 A1LiveU Ltd.
- Inbound transport for user equipment hosted data services30 Jul 2026US 2026/0222341 A1QUALCOMM Incorporated
- System and method for encrypted communication based on network address mutation23 Jul 2026US 2026/0213964 A1Stealthsolution Co.,Ltd
Most cited
By later US patents
- Security system for network address translation systems670US 5,793,763 ACisco Technology, Inc. · 1998
- Firewall providing enhanced network security and user transparency578US 5,898,830 ANetwork Engineering Software, Inc. · 1999
- Replica routing563US 6,052,718 ASightpath, Inc · 2000
- Method and system for locating network services with distributed network address translation472US 6,055,236 A3Com Corporation · 2000
- System and method for implementing multiple IP addresses on multiple ports318US 6,061,349 ACisco Technology, Inc. · 2000