H04J 14/0282
Wdm tree architectures
Official title: {WDM tree architectures}
H04J14/0282 (Wdm tree architectures) appears on 1,282 US grants and 1,444 published applications in this corpus.
Search patents in H04J- Granted patents
- 1,282
- Published applications
- 1,444
- Assignees
- 384
- Inventors
- 2,114
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 4 | 0 |
| 1993 | 9 | 0 |
| 1994 | 8 | 0 |
| 1995 | 3 | 0 |
| 1996 | 20 | 0 |
| 1997 | 11 | 0 |
| 1998 | 12 | 0 |
| 1999 | 14 | 0 |
| 2000 | 6 | 0 |
| 2001 | 7 | 6 |
| 2002 | 10 | 37 |
| 2003 | 21 | 54 |
| 2004 | 19 | 52 |
| 2005 | 16 | 71 |
| 2006 | 34 | 84 |
| 2007 | 43 | 69 |
| 2008 | 57 | 79 |
| 2009 | 55 | 109 |
| 2010 | 52 | 86 |
| 2011 | 60 | 78 |
| 2012 | 75 | 91 |
| 2013 | 82 | 80 |
| 2014 | 85 | 61 |
| 2015 | 86 | 73 |
| 2016 | 69 | 61 |
| 2017 | 83 | 71 |
| 2018 | 64 | 48 |
| 2019 | 62 | 40 |
| 2020 | 36 | 38 |
| 2021 | 31 | 40 |
| 2022 | 43 | 39 |
| 2023 | 30 | 36 |
| 2024 | 33 | 12 |
| 2025 | 20 | 18 |
| 2026 | 13 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Digital communication network architecture for providing universal information services520US 4,763,317 AAmerican Telephone and Telegraph Company, AT&T Bell Laboratories · 1988
- Power line communications system and method of operating the same239US 7,321,291 B2Current Technologies, LLC · 2008
- Wavelength division multiplexing-passive optical network system227US 9,008,513 B2Electronics and Telecommunications Research Institute · 2015
- Distributed termination system for two-way hybrid networks210US 6,490,727 B1Harmonic, Inc. · 2002
- Power line communications device and method of use202US 7,382,232 B2Current Technologies, LLC · 2008