G01B 9/02003
Using beat frequencies
Official title: using beat frequencies
G01B9/02003 (Using beat frequencies) appears on 340 US grants and 272 published applications in this corpus.
Search patents in G01B- Granted patents
- 340
- Published applications
- 272
- Assignees
- 153
- Inventors
- 570
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 4 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 4 | 0 |
| 1991 | 2 | 0 |
| 1992 | 5 | 0 |
| 1993 | 1 | 0 |
| 1994 | 9 | 0 |
| 1995 | 5 | 0 |
| 1996 | 6 | 0 |
| 1997 | 2 | 0 |
| 1998 | 13 | 0 |
| 1999 | 4 | 0 |
| 2000 | 8 | 0 |
| 2001 | 10 | 3 |
| 2002 | 6 | 10 |
| 2003 | 15 | 26 |
| 2004 | 17 | 9 |
| 2005 | 19 | 23 |
| 2006 | 18 | 22 |
| 2007 | 19 | 22 |
| 2008 | 19 | 9 |
| 2009 | 17 | 7 |
| 2010 | 7 | 10 |
| 2011 | 5 | 6 |
| 2012 | 4 | 6 |
| 2013 | 6 | 6 |
| 2014 | 8 | 5 |
| 2015 | 3 | 7 |
| 2016 | 4 | 4 |
| 2017 | 4 | 6 |
| 2018 | 8 | 5 |
| 2019 | 6 | 9 |
| 2020 | 5 | 8 |
| 2021 | 7 | 19 |
| 2022 | 15 | 15 |
| 2023 | 15 | 14 |
| 2024 | 10 | 8 |
| 2025 | 11 | 4 |
| 2026 | 5 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Interferometric displacement measurement apparatus15 Sep 2026US 12,736,324 B2Oxford University Innovation Limited
- Data age reduction2 Jun 2026US 12,644,692 B2Zygo Corporation
- Optical interferometric range sensor26 May 2026US 12,638,586 B2OMRON Corporation
- Interferometric dual-comb distance measuring device and measuring method24 Mar 2026US 12,585,002 B2Hexagon Technology Center GmbH
- Laser interferometer3 Feb 2026US 12,540,812 B2Seiko Epson Corporation
- Displacement sensing10 Sep 2026US 2026/0266594 A1UNM Rainforest Innovations
- Dual-comb spectroscopy system with tunable frequency difference at high repetition rates13 Aug 2026US 2026/0235439 A1South China University of Technology
- Detection device and corresponding detection method13 Aug 2026US 2026/0235756 A1ams-OSRAM 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.
- Dual comb spectroscopy for web thickness measurement16 Jul 2026US 2026/0202186 A1
Most cited
By later US patents
- Rapid depth scanning optical imaging device428US 6,687,010 B1Olympus Corporation · 2004
- High speed inspection of a sample using coherence processing of scattered superbroad radiation158US 6,014,214 A2000
- Endoscope with surface and deep portion imaging systems146US 5,716,324 AFuji Photo Film Co., Ltd. · 1998
- Endoscope139US 5,810,719 AFuji Photo Film Co., Ltd. · 1998
- System for measuring distance between two points using a variable frequency coherent source120US 5,412,474 ASmithsonian Institution · 1995