G01N 31/168
Determining water content by using karl fischer reagent
Official title: {Determining water content by using Karl Fischer reagent}
G01N31/168 (Determining water content by using karl fischer reagent) appears on 59 US grants and 26 published applications in this corpus.
Search patents in G01N- Granted patents
- 59
- Published applications
- 26
- Assignees
- 32
- Inventors
- 92
- Latest grant
- 25 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 4 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 5 | 0 |
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 4 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 3 |
| 2005 | 1 | 1 |
| 2006 | 2 | 1 |
| 2007 | 1 | 0 |
| 2008 | 2 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 2 |
| 2014 | 1 | 1 |
| 2015 | 2 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 1 | 2 |
| 2019 | 0 | 2 |
| 2020 | 3 | 2 |
| 2021 | 0 | 1 |
| 2022 | 0 | 2 |
| 2023 | 1 | 0 |
| 2024 | 1 | 2 |
| 2025 | 1 | 2 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for diagnosing film degradation25 Nov 2025US 12,480,851 B2Ashigara Manufacturing Inc.
- Method of determining an amount of water in a sample using a sulfonic acid30 Jan 2024US 11,885,782 B2Honeywell International Inc.
- Reagent compositions and method for Karl Fischer titration1 Aug 2023US 11,714,072 B2Honeywell International Inc.
- Vial-handling mechanism for an automated Karl Fischer titration system29 Dec 2020US 10,877,058 B2Mettler-Toledo AG
- Oven insulation arrangement20 Oct 2020US 10,809,238 B2Mettler-Toledo AG
- Demulsifier screening and characterization using modified karl fischer reagent1 Oct 2026US 2026/0298897 A1Saudi Arabian Oil Company
- Method of determining an amount of water in a sample using a phenol compound7 May 2026US 2026/0126421 A1Honeywell International Inc.
- Inspection method of elongated coated sheet3 Jul 2025US 2025/0216366 A1Panasonic Holdings Corporation
- Online and offline measurements of glycols strengths with analysis procedure17 Apr 2025US 2025/0123248 A1Saudi Arabian Oil Company
- Oven for an analysis system, titration system and titration method31 Oct 2024US 2024/0361284 A1Metrohm AG
Most cited
By later US patents
- Reagent for the quantitative determination of water95US 4,295,990 AJ. T. Baker Chemicals B.V. · 1981
- Automated Karl Fischer titration apparatus and method28US 5,340,541 AEli Lilly and Company · 1994
- Titration agent and method for using same15US 4,378,972 ARiedel-de Haen Aktiengesellschaft · 1983
- Sealed vials containing improved Karl Fischer solutions, and process for water determination using these vials15US 5,179,024 A1993
- Method and apparatus for colorimetric analysis14US 4,005,983 A1977