G01N 21/256
Arrangements using two alternating lights and one detector
Official title: {Arrangements using two alternating lights and one detector}
G01N21/256 (Arrangements using two alternating lights and one detector) appears on 25 US grants and 30 published applications in this corpus.
Search patents in G01N- Granted patents
- 25
- Published applications
- 30
- Assignees
- 31
- Inventors
- 85
- Latest grant
- 4 Mar 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 3 |
| 2014 | 0 | 1 |
| 2015 | 0 | 1 |
| 2016 | 2 | 3 |
| 2017 | 1 | 2 |
| 2018 | 3 | 3 |
| 2019 | 1 | 4 |
| 2020 | 1 | 2 |
| 2021 | 1 | 2 |
| 2022 | 2 | 4 |
| 2023 | 1 | 0 |
| 2024 | 4 | 1 |
| 2025 | 1 | 3 |
By publication year. Applications have been published since 2001.
Recent patents
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- Apparatus for analyzing a media, and associated egg identification apparatus and method17 Dec 2024US 12,169,350 B2Zoetis Services LLC
- Image processing apparatus, image processing system, image processing method, and computer-readable recording medium24 Sep 2024US 12,100,148 B2Evident Corporation
- Apparatus and method for optically characterizing a textile sample18 Jun 2024US 12,013,340 B2Uster Technologies AG
- Smoke detector30 Apr 2024US 11,971,345 B2Nohmi Bosai Ltd.
- Water quality measurement device23 Oct 2025US 2025/0327739 A1Mimbly AB
- Device for analyzing material samples by means of electromagnetic radiation with selectable light source21 Aug 2025US 2025/0264357 A1Nova Industrial Analytics GmbH
- Light intensity controller and laser wavelength scanning double-beam spectrometer6 Mar 2025US 2025/0076186 A1
- Apparatus and Method for Optically Characterizing a Textile Sample29 Aug 2024US 2024/0288369 A1Uster Technologies AG
- Apparatus and Method for Optically Characterizing a Textile Sample1 Sep 2022US 2022/0276168 A1Uster Technologies AG
Most cited
By later US patents
- Hemoglobin detector98US 4,925,299 AFresenius AG · 1990
- Turbidimeter signal processing circuit using alternating light sources36US 5,140,168 AGreat Lakes Instruments, Inc. · 1992
- Densitometer for an electrophotographic printer using focused and unfocused reflecting beams30US 5,204,538 AXerox Corporation · 1993
- Solid state non-dispersive IR analyzer using electrical current-modulated microsources26US 4,899,053 ACriticare Systems, Inc. · 1990
- Atomic absorption spectrometer7US 5,181,077 ABodenseewerk Perkin-Elmer & Co., GmbH · 1993