H04L 12/2878
Access multiplexer
Official title: {Access multiplexer, e.g. DSLAM (generic distributed time multiplexers, e.g. TDM/TDMA H04J3/1694)}
H04L12/2878 (Access multiplexer) appears on 720 US grants and 711 published applications in this corpus.
Search patents in H04L- Granted patents
- 720
- Published applications
- 711
- Assignees
- 290
- Inventors
- 1,411
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1997 | 1 | 0 |
| 1998 | 6 | 0 |
| 1999 | 6 | 0 |
| 2000 | 6 | 0 |
| 2001 | 16 | 18 |
| 2002 | 23 | 26 |
| 2003 | 17 | 26 |
| 2004 | 15 | 36 |
| 2005 | 15 | 28 |
| 2006 | 26 | 23 |
| 2007 | 15 | 35 |
| 2008 | 23 | 30 |
| 2009 | 30 | 55 |
| 2010 | 32 | 42 |
| 2011 | 34 | 25 |
| 2012 | 39 | 32 |
| 2013 | 39 | 31 |
| 2014 | 46 | 25 |
| 2015 | 32 | 22 |
| 2016 | 34 | 23 |
| 2017 | 25 | 42 |
| 2018 | 26 | 31 |
| 2019 | 42 | 37 |
| 2020 | 44 | 33 |
| 2021 | 40 | 28 |
| 2022 | 22 | 22 |
| 2023 | 23 | 16 |
| 2024 | 22 | 13 |
| 2025 | 14 | 8 |
| 2026 | 7 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Apparatus, system, and method for selectively configuring line cards to conserve power in network fabrics15 Sep 2026US 12,739,172 B1Hewlett Packard Enterprise Development LP
- Broadband access management systems and methods1 Sep 2026US 12,726,566 B2Epic Lane Networks, LP
- Demand-driven duplex30 Jun 2026US 12,671,563 B2ARRIS Enterprises LLC
- Independent datastore in a network routing environment9 Jun 2026US 12,652,192 B2Arrcus Inc.
- Analog and digital communication system for interfacing plain old telephone service devices with a network19 May 2026US 12,634,789 B2Granite Telecommunications, LLC
- Analog and digital communication system for interfacing plain old telephone service devices with a network17 Sep 2026US 2026/0281861 A1Granite Telecommunications, LLC
- Electronic device for communicating through virtual private network connection and storage medium thereof2 Jul 2026US 2026/0189430 A1Samsung Electronics Co., Ltd.
- Anomaly Detection In Copper Networks2 Jul 2026US 2026/0189593 A1Frontier Communications Holdings, LLC
- Device and method for configuring a voice channel in fttdp11 Jun 2026US 2026/0163924 A1NetComm Wireless Pty Ltd
- Multi-carrier transmission6 Nov 2025US 2025/0343664 A1Cable Television Laboratories, Inc.
Most cited
By later US patents
- Universal access multimedia data network693US 5,790,548 ABell Atlantic Network Services, Inc. · 1998
- Method and communication node for broadband distribution631US 9,860,075 B1AT&T Intellectual Property I, L. P. · 2018
- Universal access multimedia data network497US 6,452,925 B1Verizon Services Corp. · 2002
- Transmission medium and communication interfaces and methods for use therewith467US 9,742,462 B2AT&T Intellectual Property I, L. P. · 2017
- Systems and methods for multiple mode voice and data communications using intelligenty bridged TDM and packet buses and methods for performing telephony and data functions using the same342US 6,154,465 AVertical Networks, Inc. · 2000