C02F 2209/15
N03-n
C02F2209/15 (N03-n) appears on 185 US grants and 248 published applications in this corpus.
Search patents in C02F- Granted patents
- 185
- Published applications
- 248
- Assignees
- 155
- Inventors
- 552
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 1 |
| 2003 | 3 | 3 |
| 2004 | 2 | 0 |
| 2005 | 1 | 1 |
| 2006 | 1 | 6 |
| 2007 | 2 | 4 |
| 2008 | 6 | 4 |
| 2009 | 8 | 11 |
| 2010 | 10 | 11 |
| 2011 | 9 | 5 |
| 2012 | 10 | 6 |
| 2013 | 4 | 11 |
| 2014 | 8 | 24 |
| 2015 | 7 | 11 |
| 2016 | 12 | 11 |
| 2017 | 10 | 7 |
| 2018 | 8 | 8 |
| 2019 | 7 | 10 |
| 2020 | 6 | 18 |
| 2021 | 12 | 14 |
| 2022 | 11 | 17 |
| 2023 | 9 | 25 |
| 2024 | 10 | 15 |
| 2025 | 13 | 15 |
| 2026 | 7 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Process and system for simultaneous nitrification and denitrification2 Jun 2026US 12,643,803 B2Fluence Water Products and Innovation Ltd
- Systems and methods for creating and segmenting treatment processes12 May 2026US 12,623,938 B2Enviromix, Inc.
- Use of a chlorine dioxide precursor for controlling ion metabolism of bacteria in cooling water systems5 May 2026US 12,617,701 B2Ecolab USA Inc.
- Method and system for wastewater treatment10 Feb 2026US 12,545,610 B2Fluence Water Products and Innovation Ltd
- System and method for controling amount of liquid carbon source released to constructed wetland3 Feb 2026US 12,540,089 B2Ocean University of China
- Two-sludge water reuse process8 Oct 2026US 2026/0308030 A1
- Process and system for simultaneous nitrification and denitrification17 Sep 2026US 2026/0274723 A1Fluence Water Products and Innovation Ltd
- Systems and methods for creating and segmenting treatment processes10 Sep 2026US 2026/0265095 A1Enviromix, Inc.
- Stormwater management system for urban storage and recovery13 Aug 2026US 2026/0234042 A1
- Rapid granular sludge cultivation device and method for continuous flow anaerobic ammonium oxidation process30 Jul 2026US 2026/0217581 A1Beijing Drainage Group Co., Ltd
Most cited
By later US patents
- Apparatus for on-site production of nitrate ions409US 7,514,058 B1The Lata Group, Inc. · 2009
- Golf course irrigation water monitoring and treatment system204US 6,620,329 B2Turf Sentry, Inc. · 2003
- Sewage treatment process with phosphorus removal88US 6,712,970 B1Enviroquip, Inc. · 2004
- Method and apparatus for processing manure80US 5,290,451 AEcotechniek B. V. · 1994
- System for treating wastewater54US 7,563,363 B2Siemens Water Technologies Corp. · 2009