G01J 3/4338
Frequency modulated spectrometry
Official title: {Frequency modulated spectrometry}
G01J3/4338 (Frequency modulated spectrometry) appears on 246 US grants and 251 published applications in this corpus.
Search patents in G01J- Granted patents
- 246
- Published applications
- 251
- Assignees
- 171
- Inventors
- 584
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 5 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 3 | 2 |
| 2003 | 4 | 2 |
| 2004 | 2 | 5 |
| 2005 | 2 | 9 |
| 2006 | 5 | 9 |
| 2007 | 12 | 14 |
| 2008 | 6 | 15 |
| 2009 | 9 | 9 |
| 2010 | 12 | 14 |
| 2011 | 14 | 14 |
| 2012 | 9 | 9 |
| 2013 | 12 | 15 |
| 2014 | 13 | 12 |
| 2015 | 11 | 8 |
| 2016 | 11 | 14 |
| 2017 | 9 | 11 |
| 2018 | 14 | 16 |
| 2019 | 20 | 13 |
| 2020 | 13 | 9 |
| 2021 | 8 | 13 |
| 2022 | 7 | 9 |
| 2023 | 5 | 5 |
| 2024 | 6 | 7 |
| 2025 | 13 | 10 |
| 2026 | 5 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Layer thickness determination by four-wave-mixing spectroscopy22 Sep 2026US 12,742,635 B2Monstr Sense Technologies, LLC
- Spectroscopic detection method for detecting lycopene content in agricultural product22 Sep 2026US 12,742,762 B2Zhejiang Kepler Technology Co., Ltd.
- Wireless communication with enhanced maximum permissible exposure (MPE) compliance30 Jun 2026US 12,669,580 B2QUALCOMM Incorporated
- Optical detection device, system, and method for omnidirectional photodetection7 Apr 2026US 12,596,032 B2Agency for Science, Technology and Research
- Apparatuses and methods for anomalous gas concentration detection17 Feb 2026US 12,553,789 B2Bridger Photonics, Inc.
- Apparatuses and methods for anomalous gas concentration detection3 Sep 2026US 2026/0259099 A1Bridger Photonics, Inc.
- Analysis device, program for analysis device, and analysis method27 Aug 2026US 2026/0251560 A1Horiba, Ltd.
- Spectrometer and method for detecting a spectrum20 Aug 2026US 2026/0243673 A1
- Gas absorption spectroscopy apparatus9 Apr 2026US 2026/0098759 A1Shimadzu Corporation
- Label-free identification of tumor tissues by coherent nonlinear vibrational mode imaging19 Mar 2026US 2026/0079108 A1The Regents of the University of California
Most cited
By later US patents
- Laser absorption detection enhancing apparatus and method71US 4,934,816 ASouthwest Sciences Incorporated · 1990
- Method and system for performing swept-wavelength measurements within an optical system71US 6,778,307 B2Beyond 3, Inc. · 2004
- Multi-channel source assembly for downhole spectroscopy68US 8,164,050 B2Precision Energy Services, Inc. · 2012
- Multi-channel source assembly for downhole spectroscopy57US 8,536,516 B2Precision Energy Services, Inc. · 2013
- Apparatuses and methods for anomalous gas concentration detection55US 11,112,308 B2Bridger Photonics, Inc. · 2021