H04B 10/0771
Fault location on the transmission path
Official title: {Fault location on the transmission path}
H04B10/0771 (Fault location on the transmission path) appears on 239 US grants and 205 published applications in this corpus.
Search patents in H04B- Granted patents
- 239
- Published applications
- 205
- Assignees
- 116
- Inventors
- 581
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 4 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 8 | 0 |
| 2000 | 6 | 0 |
| 2001 | 8 | 2 |
| 2002 | 8 | 9 |
| 2003 | 3 | 6 |
| 2004 | 4 | 12 |
| 2005 | 7 | 8 |
| 2006 | 11 | 5 |
| 2007 | 5 | 4 |
| 2008 | 7 | 4 |
| 2009 | 2 | 6 |
| 2010 | 8 | 2 |
| 2011 | 6 | 8 |
| 2012 | 4 | 6 |
| 2013 | 5 | 4 |
| 2014 | 10 | 10 |
| 2015 | 8 | 9 |
| 2016 | 8 | 9 |
| 2017 | 11 | 11 |
| 2018 | 7 | 9 |
| 2019 | 12 | 10 |
| 2020 | 9 | 5 |
| 2021 | 13 | 9 |
| 2022 | 10 | 19 |
| 2023 | 12 | 11 |
| 2024 | 12 | 13 |
| 2025 | 13 | 10 |
| 2026 | 5 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Monitoring system, monitoring device, and monitoring method8 Sep 2026US 12,732,269 B2NEC Corporation
- Optical transmission line monitoring device, optical transmission line monitoring method, and recording medium storing optical transmission line monitoring program25 Aug 2026US 12,719,570 B2NEC Corporation
- Systems and methods for utilizing distributed fiber optic sensing to detect risks to fibers5 May 2026US 12,618,696 B2Verizon Patent and Licensing Inc.
- Environmental disturbance detection and localization using coherent modem10 Mar 2026US 12,574,113 B2Ciena Corporation
- Optical tunnel network system and fault diagnosis method for the same20 Jan 2026US 12,531,634 B2Delta Electronics, Inc.
- Seabed optical communication system, method for controlling same, and non-transitory computer-readable medium having control program stored therein17 Sep 2026US 2026/0280697 A1NEC Corporation
- Monitoring system with edf for monitoring fiber integrity in optical transmission systems23 Apr 2026US 2026/0113108 A1
- Passive optical network incorporating fiber monitoring at receiving equipment23 Apr 2026US 2026/0113112 A1Nokia Solutions and Networks Oy
- Optical fiber fault location method and apparatus12 Feb 2026US 2026/0046025 A1Huawei Technologies Co., Ltd.
- Faulty segment estimation method, faulty segment estimation system, and faulty segment estimation apparatus27 Nov 2025US 2025/0365068 A1Nippon Telegraph and Telephone Corporation
Most cited
By later US patents
- Method and system for detecting optical faults within the optical domain of a fiber communication network248US 6,005,694 AMCI WorldCom, Inc. · 1999
- Method and system for transporting ancillary network data160US 6,108,113 AMCI Communications Corporation · 2000
- Method for detecting a check-back signal in an optical transmission system102US 7,920,787 B2Nokia Siemens Networks Oy · 2011
- Communication system based on remote interrogation of terminal equipment96US 5,559,624 ALucent Technologies Inc. · 1996
- Method of and apparatus for detecting and reporting faults in an all-optical communications system91US 5,914,794 AMCI Communications Corporation · 1999