H04M 3/561
By multiplexing
Official title: {by multiplexing}
H04M3/561 (By multiplexing) appears on 291 US grants and 101 published applications in this corpus.
Search patents in H04M- Granted patents
- 291
- Published applications
- 101
- Assignees
- 141
- Inventors
- 417
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 4 | 0 |
| 1978 | 3 | 0 |
| 1979 | 4 | 0 |
| 1980 | 6 | 0 |
| 1981 | 7 | 0 |
| 1982 | 7 | 0 |
| 1983 | 5 | 0 |
| 1984 | 16 | 0 |
| 1985 | 16 | 0 |
| 1986 | 12 | 0 |
| 1987 | 10 | 0 |
| 1988 | 11 | 0 |
| 1989 | 12 | 0 |
| 1990 | 6 | 0 |
| 1991 | 7 | 0 |
| 1992 | 5 | 0 |
| 1993 | 7 | 0 |
| 1994 | 5 | 0 |
| 1995 | 5 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 3 | 1 |
| 2002 | 0 | 3 |
| 2003 | 3 | 4 |
| 2004 | 2 | 5 |
| 2005 | 2 | 8 |
| 2006 | 5 | 1 |
| 2007 | 3 | 5 |
| 2008 | 3 | 6 |
| 2009 | 6 | 3 |
| 2010 | 5 | 3 |
| 2011 | 3 | 2 |
| 2012 | 5 | 6 |
| 2013 | 5 | 2 |
| 2014 | 12 | 5 |
| 2015 | 10 | 16 |
| 2016 | 12 | 4 |
| 2017 | 6 | 1 |
| 2018 | 7 | 3 |
| 2019 | 6 | 3 |
| 2020 | 4 | 8 |
| 2021 | 11 | 2 |
| 2022 | 3 | 6 |
| 2023 | 3 | 2 |
| 2024 | 4 | 2 |
| 2025 | 1 | 0 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Cognitive communications, collaboration, consultation, and instruction with adaptive agentic AI, augmented generative intelligence and neurosynaptic cognition networks11 Aug 2026US 12,706,224 B2
- High density DECT based wireless audio system14 Jul 2026US 12,684,070 B2Rtx A/S
- Conferencing and meeting implementations with advanced features14 Jan 2025US 12,200,172 B18x8, Inc.
- Multipoint control method, apparatus and program25 Jun 2024US 12,022,031 B2Nippon Telegraph and Telephone Corporation
- Multipoint control method, apparatus and program30 Apr 2024US 11,973,900 B2Nippon Telegraph and Telephone Corporation
- Cognitive Communications, Collaboration, Consultation and Instruction with Multimodal Media and Augmented Generative Intelligence8 Aug 2024US 2024/0266074 A1
- Networks and bridging devices for facilitating audio communication6 Jun 2024US 2024/0187528 A1Nokia Solutions and Networks Oy
- High density dect based wireless audio system7 Dec 2023US 2023/0396711 A1Rtx A/S
- Method for providing audio data, and associated device, system and computer program30 Nov 2023US 2023/0388730 A1
- Voice communication system, voice communication method, and voice communication program11 Aug 2022US 2022/0256031 A1Icom Incorporated
Most cited
By later US patents
- Transform based scalable audio compression algorithms and low cost audio multi-point conferencing systems288US 5,570,363 AIntel Corporation · 1996
- Video conferencing network235US 4,710,917 ADatapoint Corporation · 1987
- Teleconferencing method and system216US 4,516,156 ASatellite Business Systems · 1985
- Video conferencing network214US 4,847,829 ADatapoint Corporation · 1989
- Signaling method for internet telephony207US 6,937,597 B1Lucent Technologies Inc. · 2005