C05B 11/00
Fertilisers produced by wet-treating or leaching raw materials either with acids in
Official title: Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes
C05B11/00 (Fertilisers produced by wet-treating or leaching raw materials either with acids in) appears on 81 US grants and 65 published applications in this corpus.
Search patents in C05B- Granted patents
- 81
- Published applications
- 65
- Assignees
- 77
- Inventors
- 223
- Latest grant
- 28 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 5 | 0 |
| 1978 | 3 | 0 |
| 1979 | 5 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 2 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 2 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 1 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 1 |
| 2015 | 1 | 1 |
| 2016 | 0 | 5 |
| 2017 | 1 | 0 |
| 2018 | 2 | 4 |
| 2019 | 3 | 4 |
| 2020 | 3 | 6 |
| 2021 | 4 | 5 |
| 2022 | 0 | 6 |
| 2023 | 2 | 8 |
| 2024 | 6 | 6 |
| 2025 | 6 | 4 |
| 2026 | 7 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Process to convert reduced sulfur species and water into hydrogen and sulfuric acid28 Apr 2026US 12,612,701 B2California Institute of Technology
- Systems and processes for the recovery of 226 Ra from phosphogypsum17 Mar 2026US 12,577,637 B2DMT Co., Ltd.
- Coherent dispersible granules and methods for forming coherent dispersible granules3 Mar 2026US 12,565,456 B2Phospholution Inc.
- Method for manufacturing fertilizer3 Mar 2026US 12,565,457 B2Resonac Corporation
- Process for the removal of heavy metals from a phosphoric acid containing composition using an ionic polymeric surfactant and use of said surfactant in the precipitation of heavy metals in a phosphoric acid containing composition10 Feb 2026US 12,545,584 B2Yara International Asa
- Processing Of Phosphate Solutions6 Aug 2026US 2026/0225888 A1Easymining Sweden AB
- System for breaking a liquid foam and method of operating thereof23 Jul 2026US 2026/0208073 A1Yara International Asa
- Integrating calcium ammonium nitrate and ammonium sulfate for safe and stable nutrient complex2 Jul 2026US 2026/0184646 A1Sabic Agri-Nutrients Company
- Method for multi-phase preparation of complex mineral fertilizer from phosphate rock and nitric acid18 Jun 2026US 2026/0167578 A1Sabic Agri-Nutrients Company
- Systems and processes for the recovery of 226ra from phosphogypsum4 Jun 2026US 2026/0152824 A1DMT Co., Ltd.
Most cited
By later US patents
- Free-flowing granular urea nutrient supplements23US 4,283,423 AUnited States Gypsum Company · 1981
- Organic neutral liquid fertilizer and process for preparing the same16US 5,174,805 A1992
- Fertilizer from brewery cleaning and rinsing solutions16US 6,042,629 ALabatt Brewing Company Limited · 2000
- Acid type solid urea-nitric fertilizer12US 4,507,139 ATennessee Valley Authority · 1985
- Granulated nitrogen-phosphorus-potassium-sulfur fertilizer from waste gypsum slurry11US 5,158,594 A1992