C02F 3/307
Characterised by direct conversion of nitrite to molecular nitrogen
Official title: {characterised by direct conversion of nitrite to molecular nitrogen, e.g. by using the Anammox process}
C02F3/307 (Characterised by direct conversion of nitrite to molecular nitrogen) appears on 133 US grants and 187 published applications in this corpus.
Search patents in C02F- Granted patents
- 133
- Published applications
- 187
- Assignees
- 86
- Inventors
- 440
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2011 | 1 | 2 |
| 2012 | 0 | 5 |
| 2013 | 3 | 9 |
| 2014 | 7 | 15 |
| 2015 | 6 | 11 |
| 2016 | 9 | 18 |
| 2017 | 16 | 7 |
| 2018 | 8 | 11 |
| 2019 | 8 | 13 |
| 2020 | 8 | 15 |
| 2021 | 12 | 17 |
| 2022 | 15 | 14 |
| 2023 | 9 | 18 |
| 2024 | 9 | 20 |
| 2025 | 13 | 5 |
| 2026 | 9 | 7 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Aerated biological filtration process for water treatment with a view to reducing the nitrogen content (NGL) of said water with reduction of carbon-source and aeration requirements22 Sep 2026US 12,741,895 B2Veolia Water Solutions & Technologies Support
- Efficient nitrogen and phosphorus removal process system for mariculture tail water treatment15 Sep 2026US 12,735,339 B2Tianjin Research Institute for Water Transport Engineering, M.O.T.
- Method for realizing advanced nitrogen removal of domestic sewage via two stage partial nitrification-anammox coupled with sulfur autotrophic denitrification25 Aug 2026US 12,715,800 B2
- Aerobic biological wastewater treatment in a continuous flow reactor31 Mar 2026US 12,590,020 B2HaskoningDHV Nederland B.V.
- Home toilet waste treatment system comprising bio-treatment device and combustion device, and method for treating toilet waste by using same31 Mar 2026US 12,590,022 B2Samsung Electronics Co., Ltd.
- Rapid granular sludge cultivation device and method for continuous flow anaerobic ammonium oxidation process30 Jul 2026US 2026/0217581 A1Beijing Drainage Group Co., Ltd
- Wastewater treatment devices, systems, and methods16 Jul 2026US 2026/0200778 A1University of Washington
- Aerobic biological wastewater treatment in a continuous flow reactor4 Jun 2026US 2026/0152425 A1HaskoningDHV Nederland B.V.
- Tank configuration with enhanced denitrification7 May 2026US 2026/0125302 A1KleanTu LLC
- Organic wastewater treatment apparatus and organic wastewater treatment method30 Apr 2026US 2026/0116801 A1Mitsubishi Kakoki Kaisha, Ltd.
Most cited
By later US patents
- Optimized nutrient removal from wastewater34US 8,012,352 B1American Water Works Company, Inc. · 2011
- Systems and methods for reducing ammonia emissions from and for recovering the ammonia liquid effluents13US 9,005,333 B1The United States of America as represented by the Secretary of Agriculture · 2015
- Method for the biological purification of ammonium-containing wastewater10US 8,911,628 B2Demon GmbH · 2014
- Mixing systems and methods of mixing9US 8,505,881 B2Enviromix, Inc. · 2013
- Mixing systems and methods of mixing8US 8,702,070 B2Enviromix, Inc. · 2014