H04J 2203/0057
Operations, administration and maintenance [oam]
Official title: Operations, administration and maintenance [OAM]
H04J2203/0057 (Operations, administration and maintenance [oam]) appears on 906 US grants and 609 published applications in this corpus.
Search patents in H04J- Granted patents
- 906
- Published applications
- 609
- Assignees
- 220
- Inventors
- 1,766
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 6 | 0 |
| 1994 | 10 | 0 |
| 1995 | 16 | 0 |
| 1996 | 28 | 0 |
| 1997 | 20 | 0 |
| 1998 | 43 | 0 |
| 1999 | 29 | 0 |
| 2000 | 36 | 0 |
| 2001 | 39 | 12 |
| 2002 | 35 | 50 |
| 2003 | 44 | 73 |
| 2004 | 31 | 43 |
| 2005 | 42 | 43 |
| 2006 | 53 | 36 |
| 2007 | 35 | 24 |
| 2008 | 48 | 35 |
| 2009 | 45 | 29 |
| 2010 | 32 | 35 |
| 2011 | 34 | 30 |
| 2012 | 44 | 31 |
| 2013 | 28 | 34 |
| 2014 | 38 | 19 |
| 2015 | 41 | 12 |
| 2016 | 24 | 24 |
| 2017 | 22 | 7 |
| 2018 | 7 | 7 |
| 2019 | 11 | 9 |
| 2020 | 12 | 12 |
| 2021 | 9 | 16 |
| 2022 | 13 | 5 |
| 2023 | 6 | 6 |
| 2024 | 5 | 9 |
| 2025 | 5 | 2 |
| 2026 | 5 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Control apparatus, communication system, control method and program8 Sep 2026US 12,732,299 B2NTT, Inc.
- FlexO/ZR subrating and partial survivability21 Apr 2026US 12,609,766 B2Ciena Corporation
- Autonomous topology realization for tilt control in an optical segment10 Mar 2026US 12,574,292 B2Infinera Corporation
- DCN packet processing method, network device, and system3 Mar 2026US 12,568,323 B2Huawei Technologies Co., Ltd.
- Service protection method and network node3 Feb 2026US 12,542,749 B2Huawei Technologies Co., Ltd.
- Otn device, service management system, and automatic connection method of otn sub-device8 Oct 2026US 2026/0312712 A1Zte Corporation
- Coordinated Layer-0 and Layer-1 Control for Right-Sizing Optical Interfaces6 Aug 2026US 2026/0230177 A1Ciena Corporation
- Method and system for transmitting service code block stream, and method and system for monitoring quality of service18 Jun 2026US 2026/0172327 A1Zte Corporation
- Messaging Channel in a Coherent Optical DSP Frame15 Jan 2026US 2026/0019149 A1Ciena Corporation
- Clock Information Transmission Method, Apparatus, and System8 Jan 2026US 2026/0012905 A1Huawei Technologies Co., Ltd.
Most cited
By later US patents
- Method and device for partitioning physical network resources444US 6,104,699 ATelefonaktiebolget LM Ericsson · 2000
- Synchronous optical transmission system342US 5,185,736 AAlcatel NA Network Systems Corp. · 1993
- Control system and operations system interface for a network element in an access system244US 5,608,720 AHubbell Incorporated · 1997
- Method and apparatus for self-restoring and self-provisioning communication networks154US 4,956,835 AAlberta Telecommunications Research Centre · 1990
- Sonet ring subnetwork management method128US 5,412,652 ANEC Corporation Of America · 1995