G01N 2021/3148
Using three or more wavelengths
Official title: {using three or more wavelengths}
G01N2021/3148 (Using three or more wavelengths) appears on 140 US grants and 139 published applications in this corpus.
Search patents in G01N- Granted patents
- 140
- Published applications
- 139
- Assignees
- 137
- Inventors
- 369
- Latest grant
- 24 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 2 |
| 2004 | 1 | 1 |
| 2005 | 0 | 1 |
| 2006 | 3 | 4 |
| 2007 | 1 | 4 |
| 2008 | 2 | 3 |
| 2009 | 1 | 4 |
| 2010 | 3 | 4 |
| 2011 | 3 | 3 |
| 2012 | 3 | 3 |
| 2013 | 2 | 5 |
| 2014 | 3 | 5 |
| 2015 | 6 | 5 |
| 2016 | 6 | 8 |
| 2017 | 5 | 6 |
| 2018 | 8 | 5 |
| 2019 | 10 | 12 |
| 2020 | 5 | 6 |
| 2021 | 5 | 10 |
| 2022 | 11 | 16 |
| 2023 | 7 | 9 |
| 2024 | 12 | 6 |
| 2025 | 11 | 9 |
| 2026 | 1 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Boehmite detection and warning system, and concentration indicator for LiB separator sheet manufacturing24 Mar 2026US 12,584,869 B2Honeywell Inc.
- TDLAS architecture for widely spaced wavelength18 Nov 2025US 12,474,263 B2Mg Smart Ventures, LLC
- Microscopy unit7 Oct 2025US 12,436,101 B2S. D. Sight Diagnostics Ltd.
- Detecting device and measuring device7 Oct 2025US 12,436,102 B2Seiko Epson Corporation
- Method and apparatus for determining optical density of a solution22 Jul 2025US 12,366,528 B2Cytiva Sweden AB
- Remote substance detection system, device and method16 Jul 2026US 2026/0202330 A1Urugus S.A.
- Determining a coffee roast score2 Jul 2026US 2026/0185935 A1
- Analyte sensor with spatially distributed photodetectors, spatially distributed light sources, and/or co-located light sources21 May 2026US 2026/0140050 A1Senseonics, Incorporated
- Optical methods and systems for glucose measurement30 Apr 2026US 2026/0118260 A1
- Methods and systems for open path gas detection23 Apr 2026US 2026/0110630 A1Insight M Inc.
Most cited
By later US patents
- Implantable sensor and system for in vivo measurement and control of fluid constituent levels1,362US 6,049,727 AAnimas Corporation · 2000
- Multi-wavelength oximeter having a means for disregarding a poor signal414US 4,714,341 AMinolta Camera Kabushiki Kaisha · 1987
- Reflection type oximeter for applying light pulses to a body tissue to measure oxygen saturation240US 4,867,557 ASumitomo Electric Industries, Ltd. · 1989
- Method and apparatus for direct spectrophotometric measurements in unaltered whole blood221US 6,262,798 B1Board of Regents, The University of Texas System · 2001
- Method of photometric in vitro determination of a blood gas parameter in a blood sample159US 5,525,518 ARadiometer Medical A/S · 1996