C05B 11/06
Using nitric acid
Official title: using nitric acid (nitrophosphates)
C05B11/06 (Using nitric acid) appears on 18 US grants and 14 published applications in this corpus.
Search patents in C05B- Granted patents
- 18
- Published applications
- 14
- Assignees
- 20
- Inventors
- 58
- Latest grant
- 10 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 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 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 1 | 0 |
| 2020 | 0 | 0 |
| 2021 | 1 | 1 |
| 2022 | 0 | 0 |
| 2023 | 0 | 2 |
| 2024 | 0 | 4 |
| 2025 | 2 | 2 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- 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
- NOx removal from gaseous effluents9 Sep 2025US 12,410,108 B2Yara International Asa
- Recycling reduced-carbon materials11 Mar 2025US 12,246,996 B2Thg, LLC
- Method for recovering phosphorus9 Nov 2021US 11,167,989 B2Zentrum FüR Sonnenenergie- Und Wasserstoff-Forschung Baden-WüRttemberg GemeinnüTzige Stiftung
- Method of treating phosphate-containing ash from waste-incineration plants by wet-chemical digestion in order to obtain compounds of aluminium, calcium, phosphorus and nitrogen27 Aug 2019US 10,392,260 B2Remondis Aqua GmbH & Co. KG
- 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
- Method for producing phosphoric acid22 May 2025US 2025/0162870 A1
- Fertilizer and manufacturing method thereof22 May 2025US 2025/0162955 A1
Most cited
By later US patents
- Acid type solid urea-nitric fertilizer12US 4,507,139 ATennessee Valley Authority · 1985
- Method of manufacturing NP- or NPK-containing fertilizers from magnesium containing phosphate10US 4,323,386 ANorsk Hydro A/S · 1982
- Recovery of phosphates from elemental phosphorus bearing wastes7US 5,275,639 ATennessee Valley Authority · 1994
- Process for the recovery of phosphate from phosphate rock6US 6,562,308 B1Agrium Inc. · 2003
- Fertilizer production4US 3,993,466 AAktieselskabet Dansk Svovlsyre-OG Superphosphat-Fabrik · 1976