H04J 14/0295
Shared protection at the optical channel
Official title: {Shared protection at the optical channel (1:1, n:m)}
H04J14/0295 (Shared protection at the optical channel) appears on 393 US grants and 375 published applications in this corpus.
Search patents in H04J- Granted patents
- 393
- Published applications
- 375
- Assignees
- 144
- Inventors
- 835
- Latest grant
- 17 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 5 | 0 |
| 1999 | 8 | 0 |
| 2000 | 9 | 0 |
| 2001 | 19 | 7 |
| 2002 | 10 | 58 |
| 2003 | 17 | 44 |
| 2004 | 21 | 34 |
| 2005 | 23 | 29 |
| 2006 | 33 | 31 |
| 2007 | 30 | 17 |
| 2008 | 22 | 16 |
| 2009 | 27 | 18 |
| 2010 | 33 | 15 |
| 2011 | 10 | 10 |
| 2012 | 15 | 10 |
| 2013 | 13 | 17 |
| 2014 | 17 | 10 |
| 2015 | 14 | 18 |
| 2016 | 14 | 9 |
| 2017 | 13 | 7 |
| 2018 | 10 | 4 |
| 2019 | 6 | 6 |
| 2020 | 4 | 1 |
| 2021 | 2 | 3 |
| 2022 | 2 | 3 |
| 2023 | 4 | 2 |
| 2024 | 1 | 3 |
| 2025 | 1 | 0 |
| 2026 | 3 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Optical path route design device and optical path route design method4 Jul 2024US 2024/0223925 A1Nippon Telegraph and Telephone Corporation
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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 apparatus for multiplexing in a wireless communication infrastructure211US 6,826,163 B2NEXTG Networks · 2004
- Method and apparatus for multiplexing in a wireless communication infrastructure201US 6,826,164 B2NEXTG Networks · 2004
- Inter-ring cross-connect for survivable multi-wavelength optical communication networks178US 6,226,111 B1Telcordia Technologies, Inc. · 2001
- Optical layer survivability and security system using optical label switching and high-speed optical header generation and detection154US 6,271,946 B1Telcordia Technologies, Inc. · 2001