H04L 51/23
Reliability checks
Official title: Reliability checks, e.g. acknowledgments or fault reporting
H04L51/23 (Reliability checks) appears on 1,270 US grants and 1,331 published applications in this corpus.
Search patents in H04L- Granted patents
- 1,270
- Published applications
- 1,331
- Assignees
- 560
- Inventors
- 2,542
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 6 | 0 |
| 1995 | 2 | 0 |
| 1996 | 7 | 0 |
| 1997 | 7 | 0 |
| 1998 | 12 | 0 |
| 1999 | 10 | 0 |
| 2000 | 13 | 0 |
| 2001 | 11 | 14 |
| 2002 | 19 | 61 |
| 2003 | 18 | 60 |
| 2004 | 18 | 50 |
| 2005 | 20 | 57 |
| 2006 | 37 | 55 |
| 2007 | 24 | 66 |
| 2008 | 42 | 50 |
| 2009 | 47 | 62 |
| 2010 | 48 | 54 |
| 2011 | 52 | 40 |
| 2012 | 62 | 51 |
| 2013 | 55 | 48 |
| 2014 | 66 | 60 |
| 2015 | 45 | 60 |
| 2016 | 71 | 63 |
| 2017 | 64 | 68 |
| 2018 | 61 | 62 |
| 2019 | 80 | 59 |
| 2020 | 81 | 66 |
| 2021 | 77 | 57 |
| 2022 | 58 | 53 |
| 2023 | 51 | 47 |
| 2024 | 51 | 34 |
| 2025 | 33 | 23 |
| 2026 | 17 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Push-alert interactive client notifications for future automated calls22 Sep 2026US 12,744,753 B2Bank of America Corporation
- Pre-validating an email recipient and domain4 Aug 2026US 12,701,117 B2DigiCert, Inc.
- Automated delivery of alerts with confirmation of receipt4 Aug 2026US 12,701,154 B2Quest Diagnostics Investments Incorporated
- Object operation method, electronic device and storage medium28 Jul 2026US 12,695,715 B2Beijing Zitiao Network Technology Co., Ltd.
- Using message context to evaluate security of requested data21 Jul 2026US 12,689,631 B2Agari Data, Inc.
- Evaluating electronic communications based on interaction data6 Aug 2026US 2026/0230503 A1Reken Corporation
- Platform and interfaces for facilitating communication in a clinical service environment2 Jul 2026US 2026/0188528 A1ScribeAmerica, LLC
- Customized messaging across multiple communication channels18 Jun 2026US 2026/0172376 A1Twilio Inc.
- Variance Detection between Heterogeneous Computer Systems28 May 2026US 2026/0147824 A1eAffirm LLC
- Error detection for wire-transfer requests in wire-transfer applications in a computing environment28 May 2026US 2026/0148208 A1Truist Bank
Most cited
By later US patents
- Messaging system apparatuses circuits and methods of operation thereof1,083US 9,443,227 B2TigerText, Inc. · 2016
- Messaging system apparatuses circuits and methods of operation thereof1,080US 9,489,661 B2TigerText, Inc. · 2016
- Electronic document delivery system in which notification of said electronic document is sent to a recipient thereof1,055US 5,790,790 ATumbleweed Software Corporation · 1998
- Private, trackable URLs for directed document delivery654US 6,192,407 B1Tumbleweed Communications Corp. · 2001
- Simultaneous electronic transactions with visible trusted parties469US 5,553,145 A1996