H04M 3/4283
Call holding circuits
Official title: {Call holding circuits}
H04M3/4283 (Call holding circuits) appears on 145 US grants and 78 published applications in this corpus.
Search patents in H04M- Granted patents
- 145
- Published applications
- 78
- Assignees
- 82
- Inventors
- 242
- Latest grant
- 9 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 8 | 0 |
| 1985 | 4 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 4 | 0 |
| 1990 | 4 | 0 |
| 1991 | 1 | 0 |
| 1992 | 4 | 0 |
| 1993 | 3 | 0 |
| 1994 | 0 | 0 |
| 1995 | 4 | 0 |
| 1996 | 4 | 0 |
| 1997 | 0 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 6 |
| 2002 | 5 | 2 |
| 2003 | 1 | 4 |
| 2004 | 6 | 6 |
| 2005 | 3 | 5 |
| 2006 | 6 | 2 |
| 2007 | 1 | 4 |
| 2008 | 2 | 4 |
| 2009 | 4 | 3 |
| 2010 | 1 | 3 |
| 2011 | 2 | 0 |
| 2012 | 2 | 2 |
| 2013 | 0 | 2 |
| 2014 | 3 | 5 |
| 2015 | 8 | 7 |
| 2016 | 5 | 2 |
| 2017 | 4 | 2 |
| 2018 | 3 | 1 |
| 2019 | 2 | 1 |
| 2020 | 1 | 0 |
| 2021 | 3 | 2 |
| 2022 | 2 | 4 |
| 2023 | 4 | 4 |
| 2024 | 5 | 4 |
| 2025 | 6 | 2 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Intelligent call queue prioritization based on vehicular data retrieval9 Sep 2025US 12,413,674 B2GM Global Technology Operations LLC
- Information processing device29 Jul 2025US 12,374,354 B2RevComm Inc.
- Systems and methods for the asynchronous detection of on hold time in multi-channel calls1 Jul 2025US 12,348,674 B2Outbound AI Inc.
- Call setup simplification for internet clients to establish media sessions with a serving IMS network10 Jun 2025US 12,328,345 B1T-Mobile Innovations LLC
- Alternate communication options during communication delay11 Mar 2025US 12,250,343 B2Liveperson, Inc.
- Systems and methods for bonded and vetted phone transmissions17 Sep 2026US 2026/0281671 A1Ford Global Technologies, LLC
- Providing enhanced call content6 Feb 2025US 2025/0047780 A1First Orion Corp.
- Method for operating a device or a network server implementing a communication hold service6 Feb 2025US 2025/0047782 A1
- Alternate communication options during communication delay8 Aug 2024US 2024/0267461 A1Liveperson, Inc.
- Intelligent call queue prioritization based on vehicular data retrieval18 Jul 2024US 2024/0244137 A1GM Global Technology Operations LLC
Most cited
By later US patents
- Human machine interface for telephone feature invocation377US 5,533,110 AMitel Corporation · 1996
- Automatic call back system and method of operation292US 5,155,761 AIntervoice, Inc. · 1992
- Call screening method and apparatus for use in completing telephone calls160US 5,960,064 AAT&T Corp. · 1999
- Internet on hold154US 5,982,774 AAT&T Corp. · 1999
- Transparent inband signaling150US 5,267,305 AAmbassador College · 1993