H04B 2210/075
Using a pilot tone
Official title: using a pilot tone
H04B2210/075 (Using a pilot tone) appears on 145 US grants and 112 published applications in this corpus.
Search patents in H04B- Granted patents
- 145
- Published applications
- 112
- Assignees
- 66
- Inventors
- 270
- Latest grant
- 15 Apr 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 5 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 4 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 9 | 0 |
| 2001 | 4 | 1 |
| 2002 | 5 | 4 |
| 2003 | 3 | 9 |
| 2004 | 1 | 18 |
| 2005 | 3 | 3 |
| 2006 | 12 | 2 |
| 2007 | 8 | 2 |
| 2008 | 5 | 1 |
| 2009 | 1 | 4 |
| 2010 | 4 | 1 |
| 2011 | 3 | 1 |
| 2012 | 0 | 5 |
| 2013 | 1 | 2 |
| 2014 | 2 | 4 |
| 2015 | 4 | 4 |
| 2016 | 7 | 7 |
| 2017 | 9 | 13 |
| 2018 | 8 | 7 |
| 2019 | 14 | 7 |
| 2020 | 5 | 3 |
| 2021 | 3 | 1 |
| 2022 | 3 | 4 |
| 2023 | 2 | 2 |
| 2024 | 4 | 2 |
| 2025 | 3 | 3 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Optical module and parameter transmission method, detection method, control method thereof, and fronthaul system15 Apr 2025US 12,278,663 B2Zte Corporation
- Management and control system of wavelength-multiplexed subranging electro-optic modulator (SEOM)s for high dynamic range applications25 Mar 2025US 12,261,642 B1Seaford Holdings, LLC
- Wavelength-multiplexed subranging electro-optic modulator (SEOM) for high dynamic range applications21 Jan 2025US 12,206,455 B1Seaford Holdings, LLC
- Self-calibrating device and method for in-phase and quadrature time skew and conjugation in a coherent transmitter10 Dec 2024US 12,166,852 B2Huawei Technologies Co., Ltd.
- Enhanced subranging electro-optic modulator (SEOM) for high dynamic range applications5 Nov 2024US 12,136,949 B1Serford Holdings, LLC
- Optical transmission and reception device and optical receiver7 May 2026US 2026/0128799 A1Mitsubishi Electric Corporation
- Pilot-assisted fiber length estimation23 Apr 2026US 2026/0113114 A1Marvell Asia Pte Ltd
- Optical module, optical communication device, and optical communication system3 Jul 2025US 2025/0219725 A1
- Management and control system of wavelength-multiplexed subranging electro-optic modulator (seom)s for high dynamic range applications6 Mar 2025US 2025/0080224 A1Seaford Holdings, LLC
- Multipath interference detection method and apparatus, and optical module and communication device20 Feb 2025US 2025/0062828 A1
Most cited
By later US patents
- Method and apparatus for monitoring performance of optical transmission systems159US 5,513,029 ANorthern Telecom Limited · 1996
- Optical communication system and optical amplifier82US 6,023,366 AFujitsu Limited · 2000
- System, device, and method for evaluating dynamic range in a communication system73US 6,377,552 B1Motorola, Inc. · 2002
- Performance monitoring and fault location in optical transmission65US 5,654,816 ALucent Technologies Inc. · 1997
- Self-stimulation signal detection in an optical transmission system64US 5,822,094 ANorthern Telecom Limited · 1998