G01N 31/162
Determining the equivalent point by means of a discontinuity
Official title: {Determining the equivalent point by means of a discontinuity}
G01N31/162 (Determining the equivalent point by means of a discontinuity) appears on 86 US grants and 51 published applications in this corpus.
Search patents in G01N- Granted patents
- 86
- Published applications
- 51
- Assignees
- 68
- Inventors
- 222
- Latest grant
- 17 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 6 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 4 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 4 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 3 | 2 |
| 2003 | 3 | 3 |
| 2004 | 1 | 7 |
| 2005 | 3 | 4 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 2 | 5 |
| 2010 | 1 | 2 |
| 2011 | 2 | 0 |
| 2012 | 4 | 1 |
| 2013 | 1 | 2 |
| 2014 | 0 | 1 |
| 2015 | 3 | 4 |
| 2016 | 2 | 1 |
| 2017 | 1 | 0 |
| 2018 | 0 | 1 |
| 2019 | 1 | 1 |
| 2020 | 0 | 2 |
| 2021 | 1 | 1 |
| 2022 | 3 | 3 |
| 2023 | 2 | 3 |
| 2024 | 1 | 3 |
| 2025 | 3 | 5 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Electrochemical cell stirring17 Mar 2026US 12,578,303 B2Hach Company
- Determination of chloride concentration in drilling fluids10 Jun 2025US 12,326,436 B2ConocoPhillips Company
- Electrochemical cell stirring28 Jan 2025US 12,210,007 B2Hach Company
- Method and apparatus for evaluating hydrogen chloride evolution as a function of temperature7 Jan 2025US 12,188,888 B2Petroleo Brasileiro S.A. - Petrobras
- Determination of chloride concentration in drilling fluids2 Jul 2024US 12,025,606 B2ConocoPhillips Company
- Residual acid analysis method for alcohol compound16 Oct 2025US 2025/0321210 A1Nan Ya Plastics Corporation
- Method for determining oxalic acid content of dimethyl oxalate26 Jun 2025US 2025/0208099 A1China Shenhua Coal To Liquid and Chemical Co., Ltd.
- System and method for determining organic chlorine content in petroleum or petrochemical streams8 May 2025US 2025/0146989 A1
- Electrochemical cell stirring10 Apr 2025US 2025/0116645 A1Hach Company
- Method for capturing carbon dioxide and gas absorption system16 Jan 2025US 2025/0018329 A1Xeca Turbo Technologies (Beijing) Co., Ltd.
Most cited
By later US patents
- Automatic process titration system56US 4,018,565 AThe Foxboro Company · 1977
- Method for determining and monitoring constituent concentration of an aqueous metalworking fluid26US 5,389,546 ACincinnati Milacron Inc. · 1995
- Automatic titration analysis apparatus23US 4,749,552 AEbara Densan Ltd. · 1988
- System and method for sensing and controlling the concentration of a chemical agent in a solution20US 7,349,760 B2Ecolab Inc. · 2008
- Methods for analyzing solder plating solutions19US 6,913,686 B2Advanced Technology Materials, Inc. · 2005