G01M 11/3172
Reflectometers detecting the back-scattered light in the frequency-domain
Official title: {Reflectometers detecting the back-scattered light in the frequency-domain, e.g. OFDR, FMCW, heterodyne detection}
G01M11/3172 (Reflectometers detecting the back-scattered light in the frequency-domain) appears on 177 US grants and 164 published applications in this corpus.
Search patents in G01M- Granted patents
- 177
- Published applications
- 164
- Assignees
- 86
- Inventors
- 294
- Latest grant
- 26 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
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| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
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| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 1 |
| 2002 | 3 | 1 |
| 2003 | 0 | 6 |
| 2004 | 3 | 3 |
| 2005 | 6 | 3 |
| 2006 | 3 | 7 |
| 2007 | 5 | 6 |
| 2008 | 9 | 9 |
| 2009 | 6 | 7 |
| 2010 | 3 | 5 |
| 2011 | 7 | 6 |
| 2012 | 3 | 2 |
| 2013 | 4 | 0 |
| 2014 | 2 | 8 |
| 2015 | 3 | 6 |
| 2016 | 6 | 11 |
| 2017 | 18 | 15 |
| 2018 | 8 | 12 |
| 2019 | 12 | 11 |
| 2020 | 14 | 11 |
| 2021 | 10 | 10 |
| 2022 | 12 | 9 |
| 2023 | 5 | 5 |
| 2024 | 4 | 3 |
| 2025 | 5 | 4 |
| 2026 | 0 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Devices and methods for measuring the amount of frequency modulation26 Aug 2025US 12,399,079 B2Nippon Telegraph and Telephone Corporation
- Method and system for extracting information from an optical signal1 Jul 2025US 12,345,596 B2Ariel Scientific Innovations Ltd.
- Technique for analyzing a spectrum of backscattered light in an optical fiber13 May 2025US 12,298,159 B2Nippon Telegraph and Telephone Corporation
- Calculating distributed twist of a multi-fiber 3D shape sensor bundle (MFB) using optical frequency domain reflectometry (OFDR) phase interrogation data6 May 2025US 12,292,353 B2The Shape Sensing Company
- Methods and apparatus to determine a shape of an optical fiber sensor25 Feb 2025US 12,235,095 B2Intuitive Surgical Operations, Inc.
- Hollow core optical fibrereflectometry launch tail30 Jul 2026US 2026/0219441 A1Microsoft Technology Licensing, LLC
- Method and device for testing optical link based on optical frequency domain reflectometry30 Apr 2026US 2026/0118215 A1Beijing Aerospace Institute for Metrology and Measurement Technology
- Optical frequency domain reflectometer module, optical frequency domain reflectometer system and method of operating an optical frequency domain reflectometer system8 Jan 2026US 2026/0009695 A1
- Method and system for extracting information from an optical signal18 Sep 2025US 2025/0290827 A1Ariel Scientific Innovations Ltd.
- Calculating distributed twist of a multi-fiber 3d shape sensor bundle (mfb) using optical frequency domain reflectometry (ofdr) phase interrogation data21 Aug 2025US 2025/0264374 A1The Shape Sensing Company
Most cited
By later US patents
- Polarization independent optical coherence-domain reflectometry334US 5,202,745 AHewlett-Packard Company · 1993
- Apparatus and methods for uniform frequency sample clocking100US 8,049,900 B2Volcano Corporation · 2011
- Wavelength dispersion probing system97US 7,020,360 B2Advantest Corporation · 2006
- Identifying optical fiber segments and determining characteristics of an optical device under test based on fiber segment scatter pattern data96US 7,440,087 B2Luna Innovations Incorporated · 2008
- High resolution interferometric optical frequency domain reflectometry (OFDR) beyond the laser coherence length85US 7,515,276 B2Luna Innovations Incorporated · 2009