G01J 3/427
Dual wavelengths spectrometry
G01J3/427 (Dual wavelengths spectrometry) appears on 179 US grants and 165 published applications in this corpus.
Search patents in G01J- Granted patents
- 179
- Published applications
- 165
- Assignees
- 145
- Inventors
- 379
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 3 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 5 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 2 |
| 2004 | 1 | 5 |
| 2005 | 2 | 1 |
| 2006 | 4 | 7 |
| 2007 | 3 | 3 |
| 2008 | 5 | 3 |
| 2009 | 5 | 2 |
| 2010 | 2 | 6 |
| 2011 | 2 | 4 |
| 2012 | 3 | 8 |
| 2013 | 5 | 7 |
| 2014 | 5 | 6 |
| 2015 | 9 | 9 |
| 2016 | 11 | 7 |
| 2017 | 10 | 9 |
| 2018 | 9 | 10 |
| 2019 | 10 | 10 |
| 2020 | 6 | 9 |
| 2021 | 13 | 15 |
| 2022 | 9 | 12 |
| 2023 | 13 | 9 |
| 2024 | 6 | 10 |
| 2025 | 12 | 9 |
| 2026 | 7 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Raman spectroscopy device8 Sep 2026US 12,730,006 B2Shimadzu Corporation
- Systems and methods for modulating sensitivity of a photometer18 Aug 2026US 12,710,357 B2IDEXX Laboratories, Inc.
- Photodetector and beating spectroscopy device14 Jul 2026US 12,680,955 B2Hamamatsu Photonics K.K.
- Hyperspectral recovery from two images16 Jun 2026US 12,659,559 B2Arizona Board of Regents on Behalf of the University of Arizona
- Photodetector and beating spectroscopy device9 Jun 2026US 12,650,377 B2Hamamatsu Photonics K.K.
- Raman Spectroscopy Device30 Apr 2026US 2026/0118177 A1Shimadzu Corporation
- Multi-wave differential absorption lidar15 Jan 2026US 2026/0016401 A1Rtx Corporation
- Spectroscopic analysis apparatus, spectroscopic analysis method, and spectroscopic analysis program25 Dec 2025US 2025/0389584 A1Hitachi High-Tech Analysis Corporation
- A photometric process measurement arrangement and a method for performing a photometric measurement9 Oct 2025US 2025/0314526 A1Hach Lange GmbH
- Wearable device such as for glucose measurement28 Aug 2025US 2025/0272940 A1Emcode Photonics LLC
Most cited
By later US patents
- Multi-wavelength incremental absorbence oximeter236US 4,167,331 AHewlett-Packard Company · 1979
- Optical spectral reflectance sensor and controller113US 6,596,996 B1The Board of Regents for Oklahoma State University · 2003
- Systems and methods for use in detecting harmful aerosol particles63US 7,423,751 B2Northrop Grumman Corporation · 2008
- Apparatus for sensing the wavelength and intensity of light60US 4,309,604 ASharp Kabushiki Kaisha · 1982
- Method of self-compensating a fiber optic chemical sensor43US 5,094,958 AFiberChem Inc. · 1992