H04J 14/021
Reconfigurable arrangements
Official title: {Reconfigurable arrangements, e.g. reconfigurable optical add/drop multiplexers [ROADM] or tunable optical add/drop multiplexers [TOADM]}
H04J14/021 (Reconfigurable arrangements) appears on 1,165 US grants and 1,243 published applications in this corpus.
Search patents in H04J- Granted patents
- 1,165
- Published applications
- 1,243
- Assignees
- 301
- Inventors
- 1,790
- Latest grant
- 6 Oct 2026
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| Year | Granted patents | Published applications |
|---|---|---|
| 1994 | 1 | 0 |
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| 1997 | 6 | 0 |
| 1998 | 6 | 0 |
| 1999 | 12 | 0 |
| 2000 | 18 | 0 |
| 2001 | 19 | 7 |
| 2002 | 22 | 67 |
| 2003 | 38 | 33 |
| 2004 | 25 | 51 |
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| 2006 | 39 | 35 |
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| 2008 | 24 | 42 |
| 2009 | 27 | 47 |
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| 2016 | 56 | 81 |
| 2017 | 82 | 64 |
| 2018 | 61 | 66 |
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| 2021 | 45 | 28 |
| 2022 | 34 | 36 |
| 2023 | 23 | 52 |
| 2024 | 29 | 38 |
| 2025 | 40 | 52 |
| 2026 | 30 | 32 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Optical fiber input/output tray with wavelength division multiplexing support for a co-packaged optical switch6 Oct 2026US 12,756,492 B2Quanta Computer Inc.
- Optical fiber test method, ROADM system, server and storage medium29 Sep 2026US 12,750,152 B2Zte Corporation
- Broadband polarization-entangled system for C+L-band flex-grid quantum networks15 Sep 2026US 12,739,047 B2UT-Battelle, LLC
- Multi-rail routing and spectrum assignment15 Sep 2026US 12,739,539 B2Ciena Corporation
- Control apparatus, communication system, control method and program8 Sep 2026US 12,732,299 B2NTT, Inc.
- Silicon backplanes for a liquid crystal on silicon (lcos) phase modulator1 Oct 2026US 2026/0304011 A1Molex Incorporated
- Optical add drop multiplexers with asymmetrical filtering17 Sep 2026US 2026/0280744 A1Equinix, Inc.
- Optical network component configuration27 Aug 2026US 2026/0254550 A1Telefonaktiebolaget LM Ericsson (publ)
- Optical Transmission Apparatus13 Aug 2026US 2026/0238370 A1NTT, Inc.
- Photonic integrated wavelength-selective switch13 Aug 2026US 2026/0238371 A1SRI International
Most cited
By later US patents
- Wavelength-selective optical add/drop using tilting micro-mirrors256US 5,960,133 ATellium, Inc. · 1999
- Modular all-optical cross-connect126US 6,614,953 B2Photuris, Inc. · 2003
- Optical add-drop multiplexers for WDM optical communication systems125US 5,778,118 ACiena Corporation · 1998
- Article comprising a wavelength-selective add-drop multiplexer111US 5,974,207 ALucent Technologies Inc. · 1999
- Optical wavelength division multiplexed network system110US 5,717,795 AKabushiki Kaisha Toshiba · 1998