H04J 14/028
Wdm bus architectures
Official title: {WDM bus architectures}
H04J14/028 (Wdm bus architectures) appears on 229 US grants and 197 published applications in this corpus.
Search patents in H04J- Granted patents
- 229
- Published applications
- 197
- Assignees
- 132
- Inventors
- 503
- Latest grant
- 7 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 4 | 0 |
| 1993 | 0 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 8 | 0 |
| 1997 | 4 | 0 |
| 1998 | 8 | 0 |
| 1999 | 7 | 0 |
| 2000 | 10 | 0 |
| 2001 | 1 | 2 |
| 2002 | 6 | 14 |
| 2003 | 8 | 22 |
| 2004 | 12 | 8 |
| 2005 | 6 | 10 |
| 2006 | 11 | 21 |
| 2007 | 9 | 10 |
| 2008 | 10 | 13 |
| 2009 | 14 | 18 |
| 2010 | 13 | 7 |
| 2011 | 14 | 8 |
| 2012 | 6 | 10 |
| 2013 | 17 | 8 |
| 2014 | 9 | 4 |
| 2015 | 8 | 4 |
| 2016 | 6 | 6 |
| 2017 | 6 | 5 |
| 2018 | 2 | 7 |
| 2019 | 8 | 3 |
| 2020 | 2 | 4 |
| 2021 | 3 | 2 |
| 2022 | 3 | 2 |
| 2023 | 1 | 2 |
| 2024 | 1 | 3 |
| 2025 | 1 | 2 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Control of ONU activation in high bit rate PONs7 Apr 2026US 12,598,406 B2
- Network node for a coherent optical WDM transmission network3 Feb 2026US 12,542,612 B2Adtran Networks SE
- Bus distribution using multiwavelength multiplexing6 May 2025US 12,292,601 B2Rambus Inc.
- Optical communication system and optical communication method2 Jan 2024US 11,863,211 B2Nippon Telegraph and Telephone Corporation
- System and methods for coherent optics based daisy-chaining8 Aug 2023US 11,722,219 B2Cable Television Laboratories, Inc.
- Optical transmission device and optical transmission method1 Oct 2026US 2026/0303209 A1NTT, Inc.
- Optical communication network system20 Aug 2026US 2026/0246556 A1Keio University
- Bus distribution using multiwavelength multiplexing16 Oct 2025US 2025/0321379 A1
- Communication system, extension station, communication method and communication system making method15 May 2025US 2025/0158734 A1Nippon Telegraph and Telephone Corporation
- Configurable connector for optical bus14 Nov 2024US 2024/0380489 A1Apple Inc.
Most cited
By later US patents
- Power line communications system and method of operating the same239US 7,321,291 B2Current Technologies, LLC · 2008
- Power line communications device and method of use202US 7,382,232 B2Current Technologies, LLC · 2008
- Power line communications device and method161US 7,450,000 B2Current Technologies, LLC · 2008
- Method and apparatus for monitoring performance of optical transmission systems159US 5,513,029 ANorthern Telecom Limited · 1996
- Spread spectrum code-division-multiple-access (SS-CDMA) lightwave communication system152US 4,703,474 AAmerican Telephone and Telegraph Company, AT&T Bell Laboratories · 1987