G01N 2021/3177
Use of spatially separated filters in simultaneous way
Official title: {Use of spatially separated filters in simultaneous way}
G01N2021/3177 (Use of spatially separated filters in simultaneous way) appears on 45 US grants and 48 published applications in this corpus.
Search patents in G01N- Granted patents
- 45
- Published applications
- 48
- Assignees
- 39
- Inventors
- 138
- Latest grant
- 14 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 2 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 4 |
| 2008 | 2 | 4 |
| 2009 | 1 | 2 |
| 2010 | 2 | 2 |
| 2011 | 1 | 1 |
| 2012 | 3 | 5 |
| 2013 | 3 | 4 |
| 2014 | 1 | 0 |
| 2015 | 3 | 2 |
| 2016 | 4 | 2 |
| 2017 | 3 | 2 |
| 2018 | 3 | 3 |
| 2019 | 2 | 1 |
| 2020 | 1 | 2 |
| 2021 | 1 | 2 |
| 2022 | 2 | 6 |
| 2023 | 2 | 1 |
| 2024 | 2 | 1 |
| 2025 | 1 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for analysing a gas using an optical sensor14 Oct 2025US 12,442,758 B2Elichens
- Optical inspection device17 Sep 2024US 12,092,582 B2Kabushiki Kaisha Toshiba
- Gas sensor with two switchable filters and method for operating such a gas sensor6 Feb 2024US 11,892,396 B2Dräger Safety AG & Co. KGaA
- Methane monitoring and detection apparatus and methods4 Jul 2023US 11,692,932 B2
- Efficient reading of birefringent data11 Apr 2023US 11,624,700 B2Microsoft Technology Licensing, LLC
- Measurement of multiple gas concentrations26 Feb 2026US 2026/0056120 A1Schlumberger Technology Corporation
- Automatic device for non-invasive malaria diagnosis through optical reflectance techniques, methods and uses thereof28 Mar 2024US 2024/0103000 A1Universidade Do Minho
- Optical detector and method for determining at least one property of at least one substance7 Dec 2023US 2023/0393061 A1Trinamix GmbH
- Efficient reading of birefringent data22 Dec 2022US 2022/0404268 A1Microsoft Technology Licensing, LLC
- Integrated sensor modules for detection of chemical substances10 Nov 2022US 2022/0357204 A1Ams AG
Most cited
By later US patents
- Diagnosis by means of fluorescent light emission from tissue157US 5,115,137 ASpectraphos AB · 1992
- Systems and methods for filter based spectrographic analysis120US 6,707,548 B2Array Bioscience Corporation · 2004
- Methods and apparatus for determining hydrocarbon fuel properties108US 5,225,679 ABoston Advanced Technologies, Inc. · 1993
- System for multi- and hyperspectral imaging94US 7,835,002 B2RP Ventures Technology Office AB · 2010
- Apparatus and method for a slim format spectrometer49US 7,345,764 B22008