G01N 21/79
Photometric titration
G01N21/79 (Photometric titration) appears on 57 US grants and 75 published applications in this corpus.
Search patents in G01N- Granted patents
- 57
- Published applications
- 75
- Assignees
- 53
- Inventors
- 161
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 3 |
| 2004 | 0 | 3 |
| 2005 | 1 | 8 |
| 2006 | 3 | 1 |
| 2007 | 1 | 0 |
| 2008 | 1 | 0 |
| 2009 | 1 | 2 |
| 2010 | 1 | 2 |
| 2011 | 1 | 2 |
| 2012 | 2 | 5 |
| 2013 | 1 | 2 |
| 2014 | 2 | 2 |
| 2015 | 7 | 3 |
| 2016 | 4 | 7 |
| 2017 | 2 | 4 |
| 2018 | 4 | 2 |
| 2019 | 2 | 7 |
| 2020 | 3 | 3 |
| 2021 | 2 | 7 |
| 2022 | 3 | 2 |
| 2023 | 4 | 5 |
| 2024 | 1 | 1 |
| 2025 | 3 | 4 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Multifluidic device and processing system for colorimetric multiplexed detection of a substance4 Aug 2026US 12,699,085 B2Purdue Research Foundation
- Monitoring system and monitoring method5 May 2026US 12,618,814 B2Mitsubishi Heavy Industries, Ltd.
- Quantifying color changes in chemical test pads induced by different concentrations of analytes under different lighting conditions4 Feb 2025US 12,216,060 B2Healthy .Io Ltd.
- Method for determining a parameter dependent on the concentration of at least one analyte in a sample liquid4 Feb 2025US 12,216,061 B2Endress+Hauser Conducta GmbH+Co. KG
- Detection of residual fluid in endoscope channels14 Jan 2025US 12,193,890 B2American Sterilizer Company
- Indicator in solution as a means of determining dosage16 Oct 2025US 2025/0321242 A1
- Microcontroller-based automatic chloride titration31 Jul 2025US 2025/0244247 A1Saudi Arabian Oil Company
- Quantifying color changes in chemical test pads induced by different concentrations of analytes under different lighting conditions27 Mar 2025US 2025/0102442 A1Healthy .Io Ltd.
- Method, apparatus and system for detecting and determining comprised reagent pads by quantifying color changes induced by exposure to a hostile environment30 Jan 2025US 2025/0035626 A1Healthy .Io Ltd.
- Quantifying color changes in chemical test pads induced by different concentrations of analytes under different lighting conditions11 Jan 2024US 2024/0011912 A1Healthy .Io Ltd.
Most cited
By later US patents
- Method of reducing analysis time of endpoint-type reaction profiles120US 7,118,916 B2LifeScan, Inc. · 2006
- Automated sample analysis102US 7,595,197 B2Caliper Life Sciences, Inc. · 2009
- Quantifying color changes of chemical test pads induced concentrations of biological analytes under different lighting conditions84US 9,285,323 B2Scanadu Incorporated · 2016
- Quantifying color changes of chemical test pads induced by specific concentrations of biological analytes under different lighting conditions41US 10,267,743 B2Scanadu Incorporated · 2019
- Titrating apparatus and method24US 4,950,610 AMan-Gill Chemical Company · 1990