C02F 1/5254
Using magnesium compounds and phosphoric acid for removing ammonia
Official title: {using magnesium compounds and phosphoric acid for removing ammonia}
C02F1/5254 (Using magnesium compounds and phosphoric acid for removing ammonia) appears on 63 US grants and 92 published applications in this corpus.
Search patents in C02F- Granted patents
- 63
- Published applications
- 92
- Assignees
- 74
- Inventors
- 221
- Latest grant
- 6 May 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 2 |
| 2003 | 1 | 6 |
| 2004 | 3 | 3 |
| 2005 | 3 | 4 |
| 2006 | 5 | 4 |
| 2007 | 1 | 1 |
| 2008 | 2 | 3 |
| 2009 | 2 | 4 |
| 2010 | 1 | 3 |
| 2011 | 3 | 2 |
| 2012 | 3 | 5 |
| 2013 | 1 | 3 |
| 2014 | 3 | 7 |
| 2015 | 2 | 3 |
| 2016 | 0 | 1 |
| 2017 | 1 | 4 |
| 2018 | 2 | 1 |
| 2019 | 3 | 7 |
| 2020 | 3 | 2 |
| 2021 | 2 | 14 |
| 2022 | 9 | 6 |
| 2023 | 2 | 3 |
| 2024 | 1 | 0 |
| 2025 | 2 | 2 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Decomposition of struvite6 May 2025US 12,291,472 B2Easy Mining Sweden AB
- System for removal of phosphorus and nitrogen from water4 Feb 2025US 12,215,044 B2NuQuatic, LLC
- Method and assembly for recovering magnesium ammonium phosphate19 Mar 2024US 11,932,561 B2Cnp Cycles GmbH
- Method for recovering N, K, and P from liquid waste stream14 Feb 2023US 11,577,959 B2Universiteit Gent
- Systems and methods of producing compositions from the nutrients recovered from waste streams31 Jan 2023US 11,566,211 B2Gsr Solutions, LLC
- System for treating wastewater using electrochemistry19 Feb 2026US 2026/0049010 A1
- Systems and methods for high-efficiency nutrient removal and recovery from waste streams13 Feb 2025US 2025/0051208 A1University of South Florida
- Eco-friendly method, apparatus, and system for precipitation and collection of dissolved support material6 Feb 2025US 2025/0042781 A1Oryx Additive, Inc.
- Improvements in relation to waste treatment7 Sep 2023US 2023/0278902 A1
- Systems and methods for treating waste streams29 Jun 2023US 2023/0203414 A1Gsr Solutions, LLC
Most cited
By later US patents
- Processes for water treatment29US 7,077,963 B2Nauveau Technology Investments · 2006
- Process for removing nitrogen compounds from raw water25US 5,126,049 AEcocure AB · 1992
- Method for treating organic sludge24US 5,360,546 ANGK Insulators, Ltd. · 1994
- Waste activated sludge stripping to remove internal phosphorus16US 7,604,740 B2Clean Water Services · 2009
- Process for removing ammonia from waste waters15US 5,294,348 ASociete Nationale Elf Aquitaine · 1994