G01N 33/182
Specific anions in water
Official title: {Specific anions in water}
G01N33/182 (Specific anions in water) appears on 277 US grants and 296 published applications in this corpus.
Search patents in G01N- Granted patents
- 277
- Published applications
- 296
- Assignees
- 243
- Inventors
- 853
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 6 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 4 | 0 |
| 1990 | 4 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 6 | 0 |
| 1994 | 5 | 0 |
| 1995 | 2 | 0 |
| 1996 | 4 | 0 |
| 1997 | 10 | 0 |
| 1998 | 3 | 0 |
| 1999 | 7 | 0 |
| 2000 | 4 | 0 |
| 2001 | 4 | 1 |
| 2002 | 3 | 2 |
| 2003 | 2 | 3 |
| 2004 | 3 | 4 |
| 2005 | 2 | 2 |
| 2006 | 0 | 2 |
| 2007 | 0 | 4 |
| 2008 | 5 | 4 |
| 2009 | 0 | 3 |
| 2010 | 1 | 4 |
| 2011 | 9 | 2 |
| 2012 | 2 | 7 |
| 2013 | 2 | 11 |
| 2014 | 1 | 13 |
| 2015 | 15 | 20 |
| 2016 | 7 | 23 |
| 2017 | 13 | 18 |
| 2018 | 17 | 19 |
| 2019 | 18 | 21 |
| 2020 | 17 | 26 |
| 2021 | 15 | 23 |
| 2022 | 13 | 17 |
| 2023 | 15 | 21 |
| 2024 | 13 | 18 |
| 2025 | 7 | 13 |
| 2026 | 14 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Flow regime classification, water liquid ratio estimation, and salinity estimation systems and methods29 Sep 2026US 12,748,093 B2OneSubsea IP UK Limited
- Method and device for analyzing ionic components in ultrapure water15 Sep 2026US 12,736,513 B2Kurita Water Industries Ltd.
- Adjoint automatic monitoring device and method for deposition rate of salt mist4 Aug 2026US 12,699,066 B2Southwest Technical Engineering Research Institute of China South Industries Group
- Method for controlling microbial growth in sugar processing7 Jul 2026US 12,672,654 B2Hydrite Chemical Co.
- Electrochemical sensors for analyte detection in water and reference correction method7 Jul 2026US 12,674,776 B2Brewer Science Inc.
- Negative ion detection device20 Aug 2026US 2026/0243751 A1Mitsubishi Heavy Industries, Ltd.
- Device for detecting fluoride ions in a nitric medium13 Aug 2026US 2026/0235541 A1
- Aquatic total alkalinity measurement system and method13 Aug 2026US 2026/0235573 A1Pcfr SAS
- Wood microfluidic engineering: development of highly stable polymer nanocomposite electrochemical nitrate sensor25 Jun 2026US 2026/0177518 A1University of Maryland, Baltimore County
- Device for measuring the alkalinity of a liquid present in an external reservoir and process for measuring the alkalinity of a liquid present in an external reservoir4 Jun 2026US 2026/0152421 A1Aquarino Comercio AutomaçãO E ServiçOs Ltda
Most cited
By later US patents
- Spectrophotometric monitoring of multiple water treatment performance indicators using chemometrics100US 5,242,602 ABiotronics Technology, Inc. · 1993
- Air and water purification using continuous breakpoint halogenation and peroxygenation96US 6,409,926 B1United States Filter Corporation · 2002
- Air and water purification using continuous breakpoint halogenation and peroxygenation91US 6,149,819 AUnited States Filter Corporation · 2000
- System for optimized control of multiple oxidizer feedstreams84US 6,620,315 B2United States Filter Corporation · 2003
- Method of predicting residual chlorine in water supply systems83US 5,675,504 AUniversite Laval · 1997