C01B 25/28
Ammonium phosphates
C01B25/28 (Ammonium phosphates) appears on 75 US grants and 43 published applications in this corpus.
Search patents in C01B- Granted patents
- 75
- Published applications
- 43
- Assignees
- 58
- Inventors
- 185
- Latest grant
- 3 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 6 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 5 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 5 | 0 |
| 1987 | 3 | 0 |
| 1988 | 3 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 1 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 3 |
| 2013 | 1 | 1 |
| 2014 | 1 | 1 |
| 2015 | 3 | 2 |
| 2016 | 1 | 2 |
| 2017 | 1 | 1 |
| 2018 | 1 | 3 |
| 2019 | 4 | 2 |
| 2020 | 1 | 1 |
| 2021 | 3 | 3 |
| 2022 | 1 | 1 |
| 2023 | 1 | 4 |
| 2024 | 3 | 7 |
| 2025 | 1 | 4 |
| 2026 | 2 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Long-term retardant and fire-suppressing gel compositions3 Mar 2026US 12,564,749 B2Perimeter Solutions LP
- Integrated ammonia and sulfuric acid production plant and process20 Jan 2026US 12,528,752 B2Chemetics Inc.
- Method to make phosphoric acid and ammonium phosphates from phosphate minerals8 Jul 2025US 12,351,456 B2Wisconsin Alumni Research Foundation
- Cathode active material for lithium secondary battery4 Jun 2024US 12,002,955 B2L&F Co., Ltd.
- Sulfur dioxide depolarized electrolysis and electrolyzer therefore23 Apr 2024US 11,965,258 B1Peregrine Hydrogen Inc.
- Process for producing phosphate products and sulfate products1 Oct 2026US 2026/0296906 A1Susphos B.V.
- Processing Of Phosphate Solutions6 Aug 2026US 2026/0225888 A1Easymining Sweden AB
- Method for recovering phosphorus, iron, and sulfur elements from ferrophosphorus slag while co-producing ammonium phosphate fertilizer9 Jul 2026US 2026/0193145 A1Yunnan Minzu University
- Method to make phosphoric acid and ammonium phosphates from phosphate mineral23 Apr 2026US 2026/0109602 A1Wisconsin Alumni Research Foundation
- Organic compound, perovskite precursor solution, perovskite film, perovskite cell, and electric apparatus18 Dec 2025US 2025/0386725 A1Contemporary Amperex Technology Co., Limited
Most cited
By later US patents
- Two-phase spraying device and reaction chamber for the preparation of a product containing ammonium orthophosphate86US 4,370,304 AUnie van Kunstmestfabrieken B.V. · 1983
- Crystallization of poly ammonium phosphate in particular organic material and uses thereof44US 9,249,021 B22016
- Chemical process on the surface of a rotating body36US 4,311,570 AImperial Chemical Industries PLC · 1982
- Production of chemical compounds29US 9,084,978 B22015
- Diammonium phosphate produced with a high-pressure pipe reactor26US 4,758,261 ATennessee Valley Authority · 1988