H04J 14/0276
Using pilot tones
Official title: {using pilot tones}
H04J14/0276 (Using pilot tones) appears on 100 US grants and 111 published applications in this corpus.
Search patents in H04J- Granted patents
- 100
- Published applications
- 111
- Assignees
- 27
- Inventors
- 179
- Latest grant
- 20 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 2 | 6 |
| 2004 | 1 | 4 |
| 2005 | 0 | 7 |
| 2006 | 6 | 1 |
| 2007 | 4 | 5 |
| 2008 | 4 | 3 |
| 2009 | 5 | 5 |
| 2010 | 4 | 6 |
| 2011 | 6 | 9 |
| 2012 | 5 | 14 |
| 2013 | 5 | 10 |
| 2014 | 11 | 10 |
| 2015 | 13 | 4 |
| 2016 | 7 | 5 |
| 2017 | 6 | 4 |
| 2018 | 2 | 2 |
| 2019 | 5 | 4 |
| 2020 | 4 | 3 |
| 2021 | 1 | 2 |
| 2022 | 2 | 2 |
| 2023 | 2 | 2 |
| 2024 | 2 | 2 |
| 2025 | 0 | 1 |
| 2026 | 1 | 0 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Optical transceiver and method for automatically setting wavelength thereof20 Jan 2026US 12,531,648 B2SOLiD, INC.
- Wavelength tuning method and related device27 Feb 2024US 11,916,599 B2Huawei Technologies Co., Ltd.
- Optical transmission system and receiving device20 Feb 2024US 11,909,515 B2Fujitsu Limited
- Methods and apparatus for feedback control of mode MUX and DEMUX7 Nov 2023US 11,811,498 B2Huawei Technologies Co., Ltd.
- Optical transceiver and method for automatically setting wavelength thereof19 Sep 2023US 11,764,892 B2SOLiD, INC.
- Establishing or switching an optical transmission path in order to transmit an optical signal2 Jan 2025US 2025/0008246 A1Deutsche Telekom AG
- Optical access system and monitoring method6 Jun 2024US 2024/0187092 A1Nippon Telegraph and Telephone Corporation
- Optical transceiver and method for automatically setting wavelength thereof18 Jan 2024US 2024/0022346 A1SOLiD, INC.
- Optical transmission system and receiving device27 Jul 2023US 2023/0239066 A1Fujitsu Limited
- Optical signal transmission method, apparatus, and device2 Mar 2023US 2023/0069239 A1
Most cited
By later US patents
- Transmitter photonic integrated circuit (TxPIC) chips78US 7,885,492 B2Infinera Corporation · 2011
- Transmitter photonic integrated circuits (TxPIC) and optical transport networks employing TxPICs55US 7,283,694 B2Infinera Corporation · 2007
- Method of in-wafer testing of monolithic photonic integrated circuits (PICs) formed in a semiconductor wafer48US 6,985,648 B2Infinera Corporation · 2006
- Method and apparatus for providing an antireflection coating on the output facet of a photonic integrated circuit (PIC) chip45US 7,460,742 B2Infinera Corporation · 2008
- Method of calibrating a monolithic transmitter photonic integrated circuit (TXPIC) chip40US 7,483,599 B2Infinera Corporation · 2009