C01D 15/08
Carbonates
Official title: Carbonates; Bicarbonates
C01D15/08 (Carbonates) appears on 241 US grants and 463 published applications in this corpus.
Search patents in C01D- Granted patents
- 241
- Published applications
- 463
- Assignees
- 241
- Inventors
- 949
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 6 | 0 |
| 2000 | 5 | 0 |
| 2001 | 0 | 1 |
| 2002 | 1 | 0 |
| 2003 | 2 | 1 |
| 2004 | 0 | 1 |
| 2005 | 0 | 1 |
| 2006 | 0 | 4 |
| 2007 | 2 | 2 |
| 2008 | 2 | 1 |
| 2009 | 1 | 1 |
| 2010 | 1 | 0 |
| 2011 | 1 | 7 |
| 2012 | 3 | 7 |
| 2013 | 5 | 9 |
| 2014 | 6 | 7 |
| 2015 | 7 | 8 |
| 2016 | 4 | 5 |
| 2017 | 5 | 9 |
| 2018 | 11 | 14 |
| 2019 | 10 | 28 |
| 2020 | 18 | 16 |
| 2021 | 9 | 28 |
| 2022 | 19 | 44 |
| 2023 | 21 | 51 |
| 2024 | 31 | 69 |
| 2025 | 41 | 94 |
| 2026 | 22 | 55 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method of lithium sulfate and sodium (potassium) carbonate directly producing lithium carbonate and reducing sulfate radical content28 Jul 2026US 12,692,171 B2
- Method for producing secondary battery material from black mass14 Jul 2026US 12,683,210 B2Kemco
- Lithium carbonate production process and apparatus30 Jun 2026US 12,668,497 B2U. S. Borax Inc.
- Recovery of lithium carbonate from basic aqueous lithium containing solutions30 Jun 2026US 12,668,498 B2American Hyperform, Inc.
- Method for recovering valuable substance9 Jun 2026US 12,649,960 B2Dowa Eco-System Co., Ltd.
- Device for producing lithium carbonate crystals8 Oct 2026US 2026/0308003 A1K-Utec AG Salt Technologies
- Systems and methods for lithium extraction from aqueous feedstocks1 Oct 2026US 2026/0295534 A1University of Utah Research Foundation
- Method for producing lithium hydroxide24 Sep 2026US 2026/0285698 A1Jx Metals Circular Solutions Co., Ltd.
- Process for producing battery-grade lithium carbonate from wastewater solution containing lithium and sodium recovered from ternary battery24 Sep 2026US 2026/0285699 A1Hebei Leheng Energy Saving Equipment Co., Ltd.
- Classifier for positive electrode active material and method for regenerating lithium precursor by using same10 Sep 2026US 2026/0265070 A1SK Innovation Co., Ltd.
Most cited
By later US patents
- Process for the purification of lithium carbonate95US 6,048,507 ALimtech · 2000
- Process for the production of high purity lithium hydroxide80US 4,036,713 AFoote Mineral Company · 1977
- Production of lithium carbonate from brines60US 5,993,759 ASociedad Minera Salar de Atacama S.A. · 1999
- Process for producing high purity lithium carbonate54US 4,207,297 AFoote Mineral Company · 1980
- Production of low boron lithium carbonate from lithium-containing brine53US 5,219,550 ACyprus Foote Mineral Company · 1993