H04M 3/085
Fault locating arrangements
Official title: {Fault locating arrangements}
H04M3/085 (Fault locating arrangements) appears on 121 US grants and 101 published applications in this corpus.
Search patents in H04M- Granted patents
- 121
- Published applications
- 101
- Assignees
- 73
- Inventors
- 243
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 5 | 0 |
| 2000 | 5 | 0 |
| 2001 | 2 | 1 |
| 2002 | 2 | 1 |
| 2003 | 1 | 7 |
| 2004 | 3 | 7 |
| 2005 | 7 | 8 |
| 2006 | 3 | 7 |
| 2007 | 7 | 1 |
| 2008 | 6 | 9 |
| 2009 | 10 | 4 |
| 2010 | 6 | 5 |
| 2011 | 4 | 6 |
| 2012 | 5 | 3 |
| 2013 | 9 | 2 |
| 2014 | 7 | 7 |
| 2015 | 8 | 9 |
| 2016 | 7 | 1 |
| 2017 | 4 | 4 |
| 2018 | 1 | 6 |
| 2019 | 4 | 3 |
| 2020 | 5 | 2 |
| 2021 | 6 | 2 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 2 |
| 2025 | 2 | 1 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Detecting a disconnect at a DSLAM14 Jul 2026US 12,684,062 B2British Telecommunications Public Ltd.Co.
- DSL fault location2 Sep 2025US 12,407,773 B2British Telecommunications Public Ltd.Co.
- Detecting a loop length change in a digital subscriber line25 Mar 2025US 12,261,978 B1British Telecommunications Public Ltd.Co.
- Method, system, and device for cloud voice quality monitoring7 Dec 2021US 11,196,870 B2Mitel Clouds Services, Inc.
- Systems and methods for detecting faults in a telecommunication system using retrain data16 Nov 2021US 11,175,975 B1Adtran, Inc.
- System and method for tracing network issues26 Feb 2026US 2026/0058861 A1Jio Platforms Limited
- Detecting a disconnect at a dslam26 Feb 2026US 2026/0059047 A1British Telecommunications Public Ltd.Co.
- Detecting a loop length change in a digital subscriber line3 Apr 2025US 2025/0112989 A1British Telecommunications Public Ltd.Co.
- Mitigating call setup disruptions31 Oct 2024US 2024/0364810 A1T-Mobile Innovations LLC
- Dsl fault location18 Apr 2024US 2024/0129404 A1British Telecommunications Public Ltd.Co.
Most cited
By later US patents
- System for automated workflow in a network management and operations system321US 6,445,774 B1MCI Communications Corporation · 2002
- Topology-based fault analysis in telecommunications networks75US 5,946,373 AMCI Communications Corporation · 1999
- System and method for maintenance arbitration at a switching node74US 6,038,288 A2000
- Method and apparatus for fault segmentation in a telephone network64US 5,699,402 ATeradyne, Inc. · 1997
- Method and apparatus for fault segmentation in a telephone network52US 6,026,145 A2000