C01C 1/24
Sulfates of ammonium
Official title: Sulfates of ammonium (C01C1/14 takes precedence)
C01C1/24 (Sulfates of ammonium) appears on 207 US grants and 158 published applications in this corpus.
Search patents in C01C- Granted patents
- 207
- Published applications
- 158
- Assignees
- 154
- Inventors
- 482
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 16 | 0 |
| 1977 | 8 | 0 |
| 1978 | 0 | 0 |
| 1979 | 3 | 0 |
| 1980 | 5 | 0 |
| 1981 | 5 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 5 | 0 |
| 1994 | 3 | 0 |
| 1995 | 4 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 6 | 0 |
| 2002 | 3 | 3 |
| 2003 | 2 | 2 |
| 2004 | 3 | 3 |
| 2005 | 2 | 1 |
| 2006 | 1 | 0 |
| 2007 | 1 | 0 |
| 2008 | 2 | 2 |
| 2009 | 1 | 4 |
| 2010 | 4 | 6 |
| 2011 | 4 | 7 |
| 2012 | 4 | 3 |
| 2013 | 6 | 10 |
| 2014 | 10 | 6 |
| 2015 | 6 | 14 |
| 2016 | 5 | 9 |
| 2017 | 8 | 5 |
| 2018 | 10 | 12 |
| 2019 | 10 | 9 |
| 2020 | 8 | 6 |
| 2021 | 6 | 8 |
| 2022 | 4 | 10 |
| 2023 | 5 | 9 |
| 2024 | 5 | 11 |
| 2025 | 8 | 6 |
| 2026 | 4 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C01C 1/242Preparation from ammonia and sulfuric acid or sulfur trioxide65
- C01C 1/245Preparation from compounds containing nitrogen and sulfur24
- C01C 1/244Preparation by double decomposition of ammonium salts with sulfates21
- C01C 1/248Preventing coalescing or controlling form or size of the crystals17
- C01C 1/249Deacidifying or drying the crystals1
Recent patents
- Method to produce a urea ammonium sulphate-based composition23 Jun 2026US 12,662,448 B2Yara International Asa
- Systems and methods to treat flue gas desulfurization and metal-bearing waste streams to recover value-added materials16 Jun 2026US 12,655,030 B2Davy Powersports Inc.
- Process for producing high purity aluminum materials31 Mar 2026US 12,590,008 B2HiurA Pty Ltd
- Methods and systems for treating phosphogypsum-containing water10 Mar 2026US 12,570,559 B2Evoqua Water Technologies LLC
- Process for controlling hydrogen sulfide and ammonia flow rates2 Dec 2025US 12,485,384 B2Uop LLC
- Process for producing phosphate products and sulfate products1 Oct 2026US 2026/0296906 A1Susphos B.V.
- Systems and methods to treat flue gas desulfurization and metal-bearing waste streams to recover value-added materials17 Sep 2026US 2026/0274697 A1Davy Powersports Inc.
- Method for the combined removal of hydrogen sulfide from a raw gas mixture ammonia from a waste liquid3 Sep 2026US 2026/0257930 A1
- Production of mnso427 Aug 2026US 2026/0250148 A1Innovative Manganese Technologies SA (PTY) LTD.
- Process for producing high purity aluminium materials13 Aug 2026US 2026/0234015 A1HiPurA Pty Ltd
Most cited
By later US patents
- Zero emission gasification, power generation, carbon oxides management and metallurgical reduction processes, apparatus, systems, and integration thereof117US 7,674,443 B12010
- Gas-liquid contact reaction apparatus67US 4,239,515 AChiyoda Chemical Engineering & Construction Co., Ltd. · 1980
- Process for the simultaneous absorption of sulfur oxides and production of ammonium sulfate62US 4,690,807 AGeneral Electric Environmental Services, Inc. · 1987
- Method of removing sulfur dioxide from flue gases, especially power plant flue gases and flue gases from garbage incinerator plants58US 6,063,352 ALurgi Lentjes Bischoff GmbH · 2000
- Apparatus for removing SO.sub.2 from flue gases and for producing ammonium sulfate solution47US 6,139,807 ALurgi Lentjes Bischoff GmbH · 2000