H04Q 2011/0081
Fault tolerance
Official title: {Fault tolerance; Redundancy; Recovery; Reconfigurability}
H04Q2011/0081 (Fault tolerance) appears on 914 US grants and 892 published applications in this corpus.
Search patents in H04Q- Granted patents
- 914
- Published applications
- 892
- Assignees
- 304
- Inventors
- 1,925
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 5 | 0 |
| 1996 | 11 | 0 |
| 1997 | 9 | 0 |
| 1998 | 14 | 0 |
| 1999 | 16 | 0 |
| 2000 | 18 | 0 |
| 2001 | 25 | 16 |
| 2002 | 20 | 81 |
| 2003 | 28 | 53 |
| 2004 | 31 | 29 |
| 2005 | 36 | 33 |
| 2006 | 28 | 17 |
| 2007 | 33 | 26 |
| 2008 | 24 | 35 |
| 2009 | 33 | 33 |
| 2010 | 37 | 28 |
| 2011 | 21 | 36 |
| 2012 | 22 | 27 |
| 2013 | 40 | 33 |
| 2014 | 40 | 39 |
| 2015 | 37 | 39 |
| 2016 | 38 | 60 |
| 2017 | 71 | 47 |
| 2018 | 47 | 33 |
| 2019 | 44 | 32 |
| 2020 | 39 | 34 |
| 2021 | 22 | 26 |
| 2022 | 26 | 30 |
| 2023 | 22 | 32 |
| 2024 | 24 | 28 |
| 2025 | 21 | 26 |
| 2026 | 21 | 19 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Interworking between variable capacity optical layer and Ethernet/IP/MPLS layer6 Oct 2026US 12,756,961 B2Ciena Corporation
- Single span calibration in a multi-span optical line system15 Sep 2026US 12,739,540 B2Ciena Corporation
- Method and system for communicating between mobile devices connected to PON devices25 Aug 2026US 12,719,569 B1Verizon Patent and Licensing Inc.
- Communication in multi-wavelength passive optical networks25 Aug 2026US 12,720,241 B1Calix, Inc.
- HBM silicon photonic TSV architecture for lookup computing AI accelerator18 Aug 2026US 12,713,976 B2Samsung Electronics Co., Ltd.
- Rogue ONU Detection17 Sep 2026US 2026/0281596 A1Adtran, Inc.
- Passive optical network for utility infrastructure resiliency10 Sep 2026US 2026/0270597 A1Commonwealth Edison Company
- Optical array for protecting optical systems20 Aug 2026US 2026/0246532 A1Cisco Technology, Inc.
- Optical network unit and registration method thereof13 Aug 2026US 2026/0238904 A1Realtek Singapore Private Limited
- Optical module access method, apparatus and system, electronic device, and nonvolatile readable storage medium13 Aug 2026US 2026/0238907 A1Suzhou Metabrain Intelligent Technology Co., Ltd.
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
- Distributed telecommunications switching system240US 5,495,484 ADSC Communications Corporation · 1996
- Method of transferring packets and router device therefor184US 7,433,301 B2Hitachi, Ltd. · 2008
- Inter-ring cross-connect for survivable multi-wavelength optical communication networks178US 6,226,111 B1Telcordia Technologies, Inc. · 2001
- System and method for packet level distributed routing in fiber optic rings168US 6,532,088 B1Alcatel · 2003