C02F 2101/163
Nitrates
Official title: {Nitrates}
C02F2101/163 (Nitrates) appears on 354 US grants and 510 published applications in this corpus.
Search patents in C02F- Granted patents
- 354
- Published applications
- 510
- Assignees
- 362
- Inventors
- 1,246
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 5 | 0 |
| 1995 | 4 | 0 |
| 1996 | 5 | 0 |
| 1997 | 4 | 0 |
| 1998 | 3 | 0 |
| 1999 | 4 | 0 |
| 2000 | 4 | 0 |
| 2001 | 2 | 2 |
| 2002 | 3 | 8 |
| 2003 | 6 | 8 |
| 2004 | 7 | 11 |
| 2005 | 5 | 12 |
| 2006 | 6 | 6 |
| 2007 | 6 | 9 |
| 2008 | 6 | 7 |
| 2009 | 5 | 13 |
| 2010 | 9 | 13 |
| 2011 | 6 | 13 |
| 2012 | 6 | 10 |
| 2013 | 9 | 17 |
| 2014 | 4 | 12 |
| 2015 | 8 | 31 |
| 2016 | 10 | 30 |
| 2017 | 16 | 23 |
| 2018 | 32 | 31 |
| 2019 | 20 | 25 |
| 2020 | 24 | 26 |
| 2021 | 17 | 41 |
| 2022 | 28 | 31 |
| 2023 | 16 | 35 |
| 2024 | 15 | 25 |
| 2025 | 28 | 46 |
| 2026 | 17 | 25 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- 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 and apparatus for removing contaminants from a fluid stream25 Aug 2026US 12,715,004 B2Mage LLC
- 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
- Anoxic bioreactor treatment followed by pH adjusted peroxide/iron treatment for enhanced, efficient selenium removal in wastewaters25 Aug 2026US 12,715,802 B2Evoqua Water Technologies LLC
- Apparatus and methods for nitrogen reduction in wastewater11 Aug 2026US 12,703,650 B2The Board of Trustees of the Leland Stanford Junior University
- Strain of paenibacillus glycanilyticus and application thereof in nitrogen removal treatment of nitrogen-containing aquaculture wastewater8 Oct 2026US 2026/0308511 A1Zhejiang Marine Fisheries Research Institute
- Process and system for simultaneous nitrification and denitrification17 Sep 2026US 2026/0274723 A1Fluence Water Products and Innovation Ltd
- Process for treatment of mine contact water17 Sep 2026US 2026/0274726 A2Teck Resources Limited
- Methods of PFAS Destruction using UV Irradiation at 222 Nanometers17 Sep 2026US 2026/0274731 A1Claros Technologies Inc.
- Adaptive critic control algorithm integrating knowledge transfer for wastewater treatment process27 Aug 2026US 2026/0250168 A1Beijing University of Technology
Most cited
By later US patents
- Electrolytic apparatus and methods for purification of aqueous solutions93US 6,315,886 B1The Electrosynthesis Company, Inc. · 2001
- Combined membrane and sorption process for selective ion removal79US 4,806,244 AThe Dow Chemical Company · 1989
- Electrodialysis including filled cell electrodialysis (electrodeionization)72US 5,503,729 AIonics, Incorporated · 1996
- Electrochemical deionization63US 5,584,981 AUnited Kingdom Atomic Energy Authority · 1996
- Electrodialysis including filled cell electrodialysis (electrodeionization)62US 5,814,197 AIonics, Incorporated · 1998