H04W 12/0431
Key distribution or pre-distribution
Official title: Key distribution or pre-distribution; Key agreement
H04W12/0431 (Key distribution or pre-distribution) appears on 1,991 US grants and 2,608 published applications in this corpus.
Search patents in H04W- Granted patents
- 1,991
- Published applications
- 2,608
- Assignees
- 577
- Inventors
- 3,668
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 4 | 0 |
| 2000 | 5 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 8 |
| 2003 | 2 | 18 |
| 2004 | 1 | 17 |
| 2005 | 6 | 26 |
| 2006 | 11 | 40 |
| 2007 | 17 | 58 |
| 2008 | 10 | 56 |
| 2009 | 21 | 74 |
| 2010 | 27 | 73 |
| 2011 | 49 | 89 |
| 2012 | 64 | 68 |
| 2013 | 89 | 85 |
| 2014 | 107 | 111 |
| 2015 | 91 | 107 |
| 2016 | 95 | 157 |
| 2017 | 120 | 118 |
| 2018 | 113 | 138 |
| 2019 | 128 | 162 |
| 2020 | 137 | 182 |
| 2021 | 144 | 153 |
| 2022 | 156 | 199 |
| 2023 | 168 | 202 |
| 2024 | 178 | 173 |
| 2025 | 143 | 144 |
| 2026 | 102 | 150 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Apparatus, system and method for secure direct communication in proximity based services6 Oct 2026US 12,756,988 B2NEC Corporation
- Physical layer security6 Oct 2026US 12,757,014 B2QDAComm LLC
- Credential handling of an IoT safe applet6 Oct 2026US 12,757,025 B2Telefonaktiebolaget LM Ericsson (publ)
- Authenticator device and method for securely identifying a valid device in an offline wireless environment29 Sep 2026US 12,750,668 B2Eaton Intelligent Power Limited
- User equipment authentication for applications22 Sep 2026US 12,745,078 B2Lenovo (Singapore) Pte. Ltd.
- Subscriber authentication in a non-public network8 Oct 2026US 2026/0312939 A1Verizon Patent and Licensing Inc.
- Communication method and apparatus8 Oct 2026US 2026/0313369 A1Huawei Technologies Co., Ltd.
- Seamless mobility domain support signaling8 Oct 2026US 2026/0313500 A1Cisco Technology, Inc.
- Method and device for linking two techniques for managing keys in dual connectivity in mobile communication system8 Oct 2026US 2026/0313509 A1Samsung Electronics Co., Ltd.
- Method for utilizing trigger device without display screens to search for target bluetooth device, and related bluetooth search device8 Oct 2026US 2026/0313601 A1Realtek Semiconductor Corp.
Most cited
By later US patents
- Identity-based wireless device configuration1,202US 7,346,344 B2AOL LLC, a Delaware Limited Liability Company · 2008
- Methods and entities using IPSec ESP to support security functionality for UDP-based traffic1,019US 8,639,936 B2Alcatel Lucent · 2014
- Multi-services application gateway and system employing the same602US 8,543,665 B2Prodea Systems, Inc. · 2013
- Methods, system and mobile device capable of enabling credit card personalization using a wireless network340US 7,628,322 B2Nokia Corporation · 2009
- Authentication in secure user plane location (SUPL) systems288US 8,627,422 B2QUALCOMM Incorporated · 2014