G01B 9/02005
Using discrete frequency stepping or switching
Official title: {using discrete frequency stepping or switching}
G01B9/02005 (Using discrete frequency stepping or switching) appears on 45 US grants and 51 published applications in this corpus.
Search patents in G01B- Granted patents
- 45
- Published applications
- 51
- Assignees
- 38
- Inventors
- 96
- Latest grant
- 10 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1994 | 3 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 1 | 1 |
| 2008 | 1 | 3 |
| 2009 | 1 | 1 |
| 2010 | 1 | 1 |
| 2011 | 0 | 2 |
| 2012 | 0 | 1 |
| 2013 | 2 | 2 |
| 2014 | 3 | 3 |
| 2015 | 0 | 2 |
| 2016 | 0 | 2 |
| 2017 | 6 | 4 |
| 2018 | 3 | 4 |
| 2019 | 1 | 3 |
| 2020 | 3 | 3 |
| 2021 | 3 | 4 |
| 2022 | 5 | 4 |
| 2023 | 3 | 3 |
| 2024 | 4 | 2 |
| 2025 | 2 | 3 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Rapid coherent synthetic wavelength interferometric absolute distance measurement10 Feb 2026US 12,546,582 B2Duke University
- Active quadrature demodulation for subsampled/circular ranging optical coherence tomography30 Sep 2025US 12,429,324 B2The General Hospital Corporation
- Systems, methods, and media for multiple beam optical coherence tomography11 Feb 2025US 12,222,202 B2The General Hospital Corporation
- Frequency control of orthogonal polarisation modes in an optical cavity24 Dec 2024US 12,174,015 B2The University of Birmingham
- Coherent optical sensor with sparse illumination26 Nov 2024US 12,154,194 B2Mitsubishi Electric Research Laboratories, Inc.
- Low-snr optical detection technique using destructive interference20 Aug 2026US 2026/0243685 A1Liom Health AG
- Method for determining a position of a target by optical interferometry and device for doing the same30 Jul 2026US 2026/0219027 A1Prodrive Technologies Innovation Services B.V.
- Systems, methods, and media for multiple beam optical coherence tomography27 Feb 2025US 2025/0067552 A1The General Hospital Corporation
- Apparatus and methods for high-speed and long depth range imaging using optical coherence tomography6 Feb 2025US 2025/0044516 A1The General Hospital Corporation
- Optoelectronic device, self-mixing interferometer and method for operating a self-mixing interferometer23 Jan 2025US 2025/0027763 A1ams International AG
Most cited
By later US patents
- Non-invasive method and low-coherence apparatus system analysis and process control245US 6,738,144 B1University of Central Florida · 2004
- Utilization of a modulated laser beam in heterodyne interferometry67US 5,293,213 A1994
- Method and structure for incorporating fiber optic acoustic sensors in a seismic array66US 6,211,964 B1Geosensor Corporation · 2001
- Fabry-Perot readout technique using wavelength tuning22US 5,276,501 AMartin Marietta Corporation · 1994
- High resolution extended depth of field optical coherence tomography20US 8,860,948 B2Ben Gurion University of the Negev Research and Development Authority Ltd.; Bar Ilan University · 2014