H04B 10/032
Using working and protection systems
Official title: using working and protection systems {(H04J14/0287 takes precedence)}
H04B10/032 (Using working and protection systems) appears on 583 US grants and 560 published applications in this corpus.
Search patents in H04B- Granted patents
- 583
- Published applications
- 560
- Assignees
- 240
- Inventors
- 1,339
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 5 | 0 |
| 1993 | 2 | 0 |
| 1994 | 6 | 0 |
| 1995 | 4 | 0 |
| 1996 | 4 | 0 |
| 1997 | 1 | 0 |
| 1998 | 9 | 0 |
| 1999 | 6 | 0 |
| 2000 | 13 | 0 |
| 2001 | 10 | 6 |
| 2002 | 8 | 21 |
| 2003 | 14 | 14 |
| 2004 | 5 | 13 |
| 2005 | 15 | 15 |
| 2006 | 9 | 15 |
| 2007 | 18 | 10 |
| 2008 | 14 | 13 |
| 2009 | 11 | 13 |
| 2010 | 12 | 19 |
| 2011 | 3 | 9 |
| 2012 | 11 | 18 |
| 2013 | 18 | 24 |
| 2014 | 22 | 36 |
| 2015 | 37 | 38 |
| 2016 | 37 | 44 |
| 2017 | 42 | 32 |
| 2018 | 34 | 28 |
| 2019 | 36 | 28 |
| 2020 | 36 | 26 |
| 2021 | 19 | 21 |
| 2022 | 20 | 25 |
| 2023 | 24 | 44 |
| 2024 | 31 | 22 |
| 2025 | 25 | 15 |
| 2026 | 8 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Automatically provisioning optical network terminal (ONT) services to paired optical line terminal (OLT) devices8 Sep 2026US 12,732,268 B1Calix, Inc.
- Optical backplane switchover method and optical communication device14 Jul 2026US 12,683,681 B2Huawei Technologies Co., Ltd.
- Optical communication system, vehicle, and industrial optical network30 Jun 2026US 12,671,495 B2Huawei Technologies Co., Ltd.
- Communication device and communication device method19 May 2026US 12,634,012 B2Gemtek Technology Co., Ltd.
- Method and apparatus applied to PON system, system, and storage medium17 Mar 2026US 12,580,646 B2Huawei Technologies Co., Ltd.
- Optical array for protecting optical systems20 Aug 2026US 2026/0246532 A1Cisco Technology, Inc.
- Remote alternating current (ac) power control system for cable network maintenance13 Aug 2026US 2026/0238340 A1Charter Communications Operating, LLC
- Dynamic Spectral Equalization in Ladder Protected Optical Networks16 Jul 2026US 2026/0205206 A1Ciena Corporation
- Optical line terminal and round-trip time adjustment method thereof16 Jul 2026US 2026/0205396 A1Realtek Singapore Private Limited
- Transceiver resiliency for embedded optical devices7 May 2026US 2026/0128788 A1Mellanox Technologies, Ltd.
Most cited
By later US patents
- Optical processor based imaging system442US 6,069,365 A2000
- Method and apparatus for operation, protection, and restoration of heterogeneous optical communication networks88US 5,986,783 AOptical Networks, Inc. · 1999
- Method and apparatus for capacity-efficient restoration in an optical communication system88US 6,587,235 B1AT&T Corp. · 2003
- Optical transmission apparatus80US 5,069,521 AGEC Plessey Telecommunications Limited · 1991
- Optical transmission systems using optical amplifiers and wavelength division multiplexing69US 5,801,858 ANorthern Telecom Limited · 1998