H04J 14/0223
Conversion to or from optical tdm
Official title: {Conversion to or from optical TDM}
H04J14/0223 (Conversion to or from optical tdm) appears on 110 US grants and 100 published applications in this corpus.
Search patents in H04J- Granted patents
- 110
- Published applications
- 100
- Assignees
- 52
- Inventors
- 208
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 3 |
| 2002 | 4 | 2 |
| 2003 | 2 | 4 |
| 2004 | 3 | 2 |
| 2005 | 1 | 2 |
| 2006 | 2 | 0 |
| 2007 | 3 | 1 |
| 2008 | 1 | 0 |
| 2009 | 1 | 4 |
| 2010 | 2 | 0 |
| 2011 | 2 | 2 |
| 2012 | 1 | 2 |
| 2013 | 2 | 3 |
| 2014 | 1 | 0 |
| 2015 | 1 | 8 |
| 2016 | 9 | 11 |
| 2017 | 11 | 15 |
| 2018 | 11 | 7 |
| 2019 | 9 | 9 |
| 2020 | 11 | 6 |
| 2021 | 6 | 10 |
| 2022 | 6 | 7 |
| 2023 | 11 | 1 |
| 2024 | 1 | 0 |
| 2025 | 1 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Monitor channel for multiple transmission channels14 Jul 2026US 12,683,706 B2Cisco Technology, Inc.
- Optical line terminal, optical network unit, and optical communications system24 Jun 2025US 12,341,602 B2Huawei Technologies Co., Ltd.
- Optical line terminal with out-of-band communication channel, and method for implementing16 Jan 2024US 11,876,556 B1Cable Television Laboratories, Inc.
- Intelligent subsystem19 Dec 2023US 11,849,265 B2
- Intelligent subsystem in a access networks12 Dec 2023US 11,843,903 B2
- Monitor channel for multiple transmission channels1 May 2025US 2025/0141583 A1Cisco Technology, Inc.
- Efficiently interconnecting a plurality of computing nodes to form a circuit-switched network27 Apr 2023US 2023/0125673 A1Microsoft Technology Licensing, LLC
- Optical demultiplexer, optical separation device, optical transmission system, and optical transmission method10 Nov 2022US 2022/0360355 A1Nippon Telegraph and Telephone Corporation
- Optical Line Terminal, Optical Network Unit, and Optical Communications System10 Nov 2022US 2022/0360356 A1Huawei Technologies Co., Ltd.
- Integrated multi-channel photonics transmitter chip having variable power dividers8 Sep 2022US 2022/0286208 A1Alpine Optoelectronics Inc.
Most cited
By later US patents
- Multiwavelength mode-locked dense wavelength division multiplexed optical communication systems132US 6,014,237 ASarnoff Corporation · 2000
- Multi-wavelength dense wavelength division multiplexed optical switching systems50US 6,388,782 B1Sarnoff Corporation · 2002
- All-optical processing in communications systems43US 5,953,138 ABritish Telecommunications Public Ltd.Co. · 1999
- Wavelength selective optical delay line38US 5,737,106 AAlcatel · 1998
- Multiple-channel all-optical TDM-WDM converter and multiple-channel all-optical TDM demultiplexer37US 6,023,360 ANippon Telegraph and Telephone Corporation · 2000