G01N 31/02
Investigating or analysing non-biological materials by the use of the chemical methods
Official title: using precipitation {(measuring deposition or liberation of materials from an electrolyte G01N27/42)}
G01N31/02 (Investigating or analysing non-biological materials by the use of the chemical methods) appears on 36 US grants and 50 published applications in this corpus.
Search patents in G01N- Granted patents
- 36
- Published applications
- 50
- Assignees
- 55
- Inventors
- 140
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 3 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 2 |
| 2006 | 1 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 2 |
| 2011 | 0 | 1 |
| 2012 | 1 | 0 |
| 2013 | 0 | 1 |
| 2014 | 2 | 1 |
| 2015 | 0 | 2 |
| 2016 | 1 | 4 |
| 2017 | 4 | 3 |
| 2018 | 3 | 5 |
| 2019 | 4 | 4 |
| 2020 | 4 | 1 |
| 2021 | 0 | 6 |
| 2022 | 2 | 0 |
| 2023 | 2 | 4 |
| 2024 | 2 | 3 |
| 2025 | 0 | 6 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for monitoring and/or controlling phase separation in chemical processes and samples26 May 2026US 12,638,400 B2BASF SE
- Process for quantification of metal amino acid chelates in solutions and solids24 Mar 2026US 12,584,896 B2Premex, Inc.
- Method for measuring a degree of homogeneity of oils using back titration and measuring apparatus using the same26 Nov 2024US 12,153,030 B2Korea Institute of Energy Research
- Methods for detection of lead in water30 Apr 2024US 11,971,398 B2ITA International, LLC
- Detecting amine-based inhibitors in drilling fluids26 Sep 2023US 11,768,190 B2Halliburton Energy Services.Inc.
- Process for quantification of metal amino acid chelates in solutions and solids23 Jul 2026US 2026/0210919 A1Premex, Inc.
- Measuring device and method for quantitative chemical analysis16 Apr 2026US 2026/0104348 A1SAFECHEM Europe GmbH
- Method for detecting target substance22 Jan 2026US 2026/0023060 A1Taiwan Semiconductor Manufacturing Company.Ltd
- Potassium measurement with sodium gluconate14 Aug 2025US 2025/0258087 A1Hach Company
- Chromium-free halides determination in drilling fluids12 Jun 2025US 2025/0189499 A1Halliburton Energy Services.Inc.
Most cited
By later US patents
- Kit and method for testing liquids for hydrogen sulfide content15US 4,174,202 AThe Dow Chemical Company · 1979
- Single sample method for determination of lipoprotein concentrations in blood14US 4,039,285 AOrtho Diagnostics, Inc. · 1977
- Power monitoring systems and methods10US 9,500,716 B2GRID 20/20, Inc. · 2016
- Chemical analysis of ions incorporated in lattices using coherent excitation sources5US 4,007,009 AWisconsin Alumni Research Foundation · 1977
- Crystallization analysis fractionization5US 5,222,390 AThe Dow Chemical Company · 1993