H04M 2203/551
Call history
H04M2203/551 (Call history) appears on 776 US grants and 634 published applications in this corpus.
Search patents in H04M- Granted patents
- 776
- Published applications
- 634
- Assignees
- 265
- Inventors
- 1,299
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 0 | 0 |
| 1999 | 11 | 0 |
| 2000 | 8 | 0 |
| 2001 | 7 | 3 |
| 2002 | 6 | 4 |
| 2003 | 3 | 4 |
| 2004 | 9 | 17 |
| 2005 | 8 | 13 |
| 2006 | 7 | 19 |
| 2007 | 5 | 14 |
| 2008 | 5 | 11 |
| 2009 | 6 | 20 |
| 2010 | 11 | 21 |
| 2011 | 12 | 12 |
| 2012 | 25 | 28 |
| 2013 | 27 | 29 |
| 2014 | 45 | 49 |
| 2015 | 48 | 40 |
| 2016 | 61 | 51 |
| 2017 | 79 | 53 |
| 2018 | 69 | 44 |
| 2019 | 75 | 39 |
| 2020 | 62 | 31 |
| 2021 | 40 | 28 |
| 2022 | 40 | 33 |
| 2023 | 51 | 33 |
| 2024 | 23 | 14 |
| 2025 | 23 | 15 |
| 2026 | 5 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Detection and methods for handling a TDOS attack6 Oct 2026US 12,756,776 B2Intrado Life & Safety, Inc.
- Identifying and processing, for priority, calls in data communications server8 Sep 2026US 12,732,579 B18x8, Inc.
- Systems and methods for JIP and CLLI matching in telecommunications metadata and machine-learning4 Aug 2026US 12,701,184 B2Pindrop Security, Inc.
- Device, system and method for providing machine learning prompts on a call at a contact center server5 May 2026US 12,621,388 B2Mitel Networks Corporation
- Contact center evolution model20 Jan 2026US 12,531,948 B2Avaya Management L.P.
- Computer-implemented systems and methods for evaluating contact center performance using simulated agent event and contact event data27 Aug 2026US 2026/0254897 A1Afiniti AI Limited
- Personalization for Customer Experience18 Jun 2026US 2026/0172507 A1
- Automated systems for communications analysis according to recording restrictions28 May 2026US 2026/0149772 A1Liveperson, Inc.
- Electronic device that indicates current interest in receiving telephone call based on registered prior activity21 May 2026US 2026/0143065 A1Motorola Mobility LLC
- Systems for call monitoring and associated methods using call arrival intervals23 Apr 2026US 2026/0113401 A1Avoxi, Inc.
Most cited
By later US patents
- System and method for generating a dynamic interface via a communications network2,178US 6,850,949 B2Right Now Technologies, Inc. · 2005
- Method and apparatus for handling in-bound telemarketing calls457US 5,537,470 AAT&T Corp. · 1996
- System and methods for intelligent routing of customer requests using customer and agent models417US 6,389,400 B1SBC Technology Resources, Inc. · 2002
- Method and apparatus for intelligent routing of incoming calls to representatives in a call center380US 6,798,876 B1AT&T Corp. · 2004
- Arrangement for improving retention of call center's customers374US 6,064,731 ALucent Technologies Inc. · 2000