H04M 2201/14
Delay circuits
Official title: Delay circuits; Timers
H04M2201/14 (Delay circuits) appears on 485 US grants and 486 published applications in this corpus.
Search patents in H04M- Granted patents
- 485
- Published applications
- 486
- Assignees
- 241
- Inventors
- 974
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 5 | 1 |
| 2002 | 7 | 9 |
| 2003 | 10 | 14 |
| 2004 | 9 | 9 |
| 2005 | 3 | 18 |
| 2006 | 14 | 19 |
| 2007 | 16 | 25 |
| 2008 | 12 | 24 |
| 2009 | 5 | 26 |
| 2010 | 18 | 34 |
| 2011 | 17 | 16 |
| 2012 | 32 | 21 |
| 2013 | 36 | 18 |
| 2014 | 35 | 17 |
| 2015 | 18 | 21 |
| 2016 | 28 | 27 |
| 2017 | 24 | 20 |
| 2018 | 29 | 19 |
| 2019 | 27 | 22 |
| 2020 | 22 | 22 |
| 2021 | 35 | 31 |
| 2022 | 16 | 16 |
| 2023 | 24 | 22 |
| 2024 | 17 | 15 |
| 2025 | 14 | 12 |
| 2026 | 4 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Device independent text captioned telephone service18 Aug 2026US 12,712,968 B2Ultratec, Inc.
- Audio processing method and apparatus21 Apr 2026US 12,609,123 B2Huawei Technologies Co., Ltd.
- Method and apparatus for processing caller ring back tone, storage medium, and electronic device31 Mar 2026US 12,592,990 B2Zte Corporation
- Out-of-band call authentication using pseudo call routing20 Jan 2026US 12,531,949 B2First Orion Corp.
- Call routing methods and systems25 Nov 2025US 12,483,656 B1United Services Automobile Association (USAA)
- Systems and methods for integrating on-premises systems and cloud-based systems23 Jul 2026US 2026/0214168 A1Genesys Cloud Services, Inc.
- Out-of-band call authentication using pseudo call routing14 May 2026US 2026/0135947 A1First Orion Corp.
- Telecommunications call augmentation system7 May 2026US 2026/0127637 A1Incall Limited
- Computer-implemented method for managing voice call initiation30 Apr 2026US 2026/0122181 A1Elisa Oyj
- 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 real-time, personalized, dynamic, interactive voice services for corporate-analysis related information351US 7,340,040 B1MicroStrategy Incorporated · 2008
- Contact center and method for tracking and acting on one and done customer contacts239US 7,734,032 B1Avaya Inc. · 2010
- Method and system for connecting a subscriber to an advertiser prior to call completion231US 7,376,223 B2AT&T Delaware Intellectual Property, Inc. · 2008
- Method and apparatus for servicing queued requests216US 6,496,580 B1Aspect Communications Corporation · 2002
- Digital telephone system with automatic voice mail redirection201US 6,542,584 B1Intel Corporation · 2003