G01N 33/188
Determining the state of nitrification
Official title: {Determining the state of nitrification}
G01N33/188 (Determining the state of nitrification) appears on 38 US grants and 48 published applications in this corpus.
Search patents in G01N- Granted patents
- 38
- Published applications
- 48
- Assignees
- 44
- Inventors
- 155
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 2 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 3 |
| 2016 | 0 | 6 |
| 2017 | 5 | 3 |
| 2018 | 2 | 1 |
| 2019 | 1 | 2 |
| 2020 | 3 | 2 |
| 2021 | 2 | 3 |
| 2022 | 3 | 6 |
| 2023 | 3 | 3 |
| 2024 | 2 | 8 |
| 2025 | 6 | 7 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Evaluation method of biological nitrogen removal capacity in water based on functional traits of benthic animals30 Jul 2026US 2026/0219255 A1Chongqing University
- Electrochemical method for detection, identification, and quantification of analytes, and equipment to perform said method8 Jan 2026US 2026/0009761 A1Blueming S.L.U.
- A photometric process measurement arrangement and a photometric measurement method6 Nov 2025US 2025/0341422 A1Hach Lange GmbH
- A photometric process measurement arrangement and a method for performing a photometric measurement9 Oct 2025US 2025/0314526 A1Hach Lange GmbH
- Geochemical analysis of drainage basins17 Jul 2025US 2025/0231024 A1X Development LLC
Most cited
By later US patents
- System for detection and prediction of water quality events20US 7,720,615 B2Sensis Corporation · 2010
- Method for the detection of nitro-containing compositions using ultraviolet photolysis12US 6,051,436 ALockheed Idaho Technologies Company · 2000
- Method for measuring nitrite and nitrate in aqueous medium10US 5,858,792 AUniversity of South Florida · 1999
- Enhanced denitrification process by monitoring and controlling carbonaceous nutrient addition6US 6,106,718 ABioChem Technology, Inc. · 2000
- Apparatus for measuring ammonia in biochemical processes5US 6,143,246 ABioChem Technology, Inc. · 2000