G01J 3/22
Littrow mirror spectrometers
G01J3/22 (Littrow mirror spectrometers) appears on 35 US grants and 33 published applications in this corpus.
Search patents in G01J- Granted patents
- 35
- Published applications
- 33
- Assignees
- 30
- Inventors
- 79
- Latest grant
- 17 Jun 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 2 |
| 2002 | 1 | 5 |
| 2003 | 4 | 0 |
| 2004 | 2 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 2 |
| 2008 | 1 | 2 |
| 2009 | 2 | 1 |
| 2010 | 0 | 2 |
| 2011 | 1 | 0 |
| 2012 | 2 | 0 |
| 2013 | 1 | 1 |
| 2014 | 2 | 3 |
| 2015 | 0 | 1 |
| 2016 | 1 | 1 |
| 2017 | 3 | 1 |
| 2018 | 1 | 0 |
| 2019 | 0 | 4 |
| 2020 | 4 | 1 |
| 2021 | 1 | 2 |
| 2022 | 3 | 2 |
| 2023 | 1 | 0 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Dual resolution spectrometer, and spectrometric measurement apparatus and method using the spectrometer17 Jun 2025US 12,332,164 B2Samsung Electronics Co., Ltd.
- Echelle spectrometer2 May 2023US 11,639,874 B2PerkinElmer Health Sciences, Inc.
- Spectrally-resolved raman water lidar2 Aug 2022US 11,402,511 B2Wuhan University
- Temperature insensitive filter14 Jun 2022US 11,360,262 B2Imec Vzw
- Spectral imaging system31 May 2022US 11,346,718 B2California Institute of Technology
- Gaseous leak detection system and associated methods8 Oct 2026US 2026/0309573 A1TrelliSense, Inc.
- Dual resolution spectrometer, and spectrometric measurement apparatus and method using the spectrometer1 Feb 2024US 2024/0035957 A1Samsung Electronics Co., Ltd.
- Echelle Spectrometer14 Jul 2022US 2022/0221340 A1PerkinElmer Health Sciences, Inc.
- Atomic absorption spectrometer5 May 2022US 2022/0136964 A1Analytik Jena AG
- Temperature insensitive filter4 Mar 2021US 2021/0063638 A1Imec Vzw
Most cited
By later US patents
- High resolution etalon-grating spectrometer56US 6,538,737 B2Cymer, Inc. · 2003
- Compact high resolution grating spectrometer22US 6,061,129 ACymer, Inc. · 2000
- Compact littrow-type scanning spectrometer17US 6,597,452 B1Jobin Yvon, Inc. · 2003
- Curved grating spectrometer with very high wavelength resolution12US 7,283,233 B12007
- Littrow spectrometer and a spectral domain optical coherence tomography system with a Littrow spectrometer10US 7,456,957 B2Carl Zeiss Meditec AG · 2008