C01B 25/30
Alkali metal phosphates
C01B25/30 (Alkali metal phosphates) appears on 159 US grants and 188 published applications in this corpus.
Search patents in C01B- Granted patents
- 159
- Published applications
- 188
- Assignees
- 172
- Inventors
- 613
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 7 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 4 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 3 | 0 |
| 1987 | 13 | 0 |
| 1988 | 4 | 0 |
| 1989 | 5 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 2 |
| 2005 | 2 | 1 |
| 2006 | 0 | 2 |
| 2007 | 0 | 1 |
| 2008 | 1 | 0 |
| 2009 | 3 | 2 |
| 2010 | 0 | 3 |
| 2011 | 1 | 3 |
| 2012 | 2 | 2 |
| 2013 | 1 | 8 |
| 2014 | 2 | 7 |
| 2015 | 11 | 7 |
| 2016 | 3 | 8 |
| 2017 | 3 | 6 |
| 2018 | 4 | 10 |
| 2019 | 6 | 6 |
| 2020 | 7 | 9 |
| 2021 | 4 | 15 |
| 2022 | 5 | 10 |
| 2023 | 10 | 20 |
| 2024 | 10 | 26 |
| 2025 | 9 | 26 |
| 2026 | 6 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for preparing lithium manganese iron phosphate, cathode material, and lithium-ion battery6 Oct 2026US 12,753,077 B2Phylion Battery Co., Ltd.
- Lithium nickel manganese-containing composite oxide, method for preparation thereof, positive electrode plate, secondary battery and electrical device14 Jul 2026US 12,679,730 B2Contemporary Amperex Technology (Hong Kong) Limited
- Ore hydrometallurgical slag and phosphating slag7 Apr 2026US 12,595,532 B2Gem Co., Ltd.
- Lithium manganese iron phosphate positive electrode active material and preparation method, positive electrode plate, secondary battery and electrical apparatus thereof31 Mar 2026US 12,589,999 B2Contemporary Amperex Technology Co., Limited
- Preparation method of cesium difluorophosphate for aqueous negative electrode slurry, negative electrode slurry, negative electrode plate, and secondary battery24 Mar 2026US 12,583,748 B2Zhuhai Smoothway Electronic Materials Co., Ltd.
- Manufacturing method for lithium phosphate1 Oct 2026US 2026/0296888 A1Posco Holdings Inc.
- Method for preparing lithium difluorophosphate salt for lithium secondary battery3 Sep 2026US 2026/0257918 A1Ep Chemtech Co., Ltd.
- A method for recovery of lithium13 Aug 2026US 2026/0233998 A1Northvolt Revolt AB
- Processing Of Phosphate Solutions6 Aug 2026US 2026/0225888 A1Easymining Sweden AB
- Process for the recovery of a useful material from a battery30 Jul 2026US 2026/0217534 A1Materials Processing Institute
Most cited
By later US patents
- Vapor deposition of metal oxides, silicates and phosphates, and silicon dioxide54US 6,969,539 B2President and Fellows of Harvard College · 2005
- Method for economical extraction of lithium from solution including lithium27US 8,778,289 B2Research Institute of Industrial Science & Technology · 2014
- Removal of fluorine from phosphatic solutions20US 4,053,561 AStauffer Chemical Company · 1977
- Surface treating mineral particles to reduce halide adsorption20US 4,781,982 AAluminum Company of America · 1988
- Method of recovering phosphate for reuse as a fertilizer20US 7,588,744 B1Layne Christensen Company · 2009