C01D 1/20
Preparation by reacting oxides or hydroxides with alkali metal salts
C01D1/20 (Preparation by reacting oxides or hydroxides with alkali metal salts) appears on 47 US grants and 48 published applications in this corpus.
Search patents in C01D- Granted patents
- 47
- Published applications
- 48
- Assignees
- 52
- Inventors
- 122
- Latest grant
- 17 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 3 | 0 |
| 2008 | 1 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 2 |
| 2012 | 1 | 2 |
| 2013 | 1 | 2 |
| 2014 | 3 | 1 |
| 2015 | 2 | 2 |
| 2016 | 1 | 1 |
| 2017 | 1 | 3 |
| 2018 | 1 | 2 |
| 2019 | 3 | 2 |
| 2020 | 2 | 4 |
| 2021 | 1 | 2 |
| 2022 | 6 | 2 |
| 2023 | 1 | 6 |
| 2024 | 2 | 3 |
| 2025 | 4 | 5 |
| 2026 | 2 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- DHSV scale removal method in the production string17 Mar 2026US 12,577,118 B2Petroleo Brasileiro S.A. - Petrobras
- Sodium sulfate by-product processing in lithium and battery chemical production13 Jan 2026US 12,522,510 B2Hatch Ltd.
- Process for solubilizing calcium carbonate to obtain a solid compound and an alkaline liquid solution11 Nov 2025US 12,466,733 B2Global Carbon Emissions Solutions, LLC
- Process for treating a sodium carbonate purge7 Oct 2025US 12,434,976 B1Solvay SA
- Systems and methods for producing alkali hydroxides and sulfuric acid or hydrochloric acid22 Jul 2025US 12,365,597 B1Innovator Energy, LLC
- High-efficiency method for producing lithium hydroxide from lithium carbonate through process improvement1 Oct 2026US 2026/0296907 A1Korea Institute of Geoscience and Mineral Resources
- A method for treating waste sodium sulphate obtained from an industrial process, use of waste sodium sulphate obtained from an industrial process and an industrial processing plant18 Jun 2026US 2026/0167509 A1Umicore Battery Materials Finland Oy
- A method for treating waste sodium sulphate obtained from an industrial process of battery industry, use of waste sodium sulphate obtained from an industrial process of battery industry and an industrial processing plant of battery industry18 Jun 2026US 2026/0167581 A1Umicore Battery Materials Finland Oy
- Systems and methods for producing alkali hydroxides and sulfuric acid or hydrochloric acid11 Jun 2026US 2026/0159405 A1Innovator Energy, LLC
- Processes for producing alkali compounds using acid gas25 Dec 2025US 2025/0388482 A1Innovator Energy, LLC
Most cited
By later US patents
- Methods for treating lithium-containing materials16US 10,544,512 B2Nemaska Lithium Inc. · 2020
- Zero discharge water desalination plant with minerals extraction integrated with natural gas combined cycle power generation14US 9,045,351 B2HL Seawater Holdings, LLC · 2015
- Accelerated process for causticization of Kraft green liquor10US 4,159,922 ANalco Chemical Company · 1979
- Process for the purification of solutions containing a sodium or potassium carbonate, sulphate, and possibly hydroxide, and at least one of the metals vanadium, uranium and molybdenum10US 4,451,439 APechiney · 1984
- Recovering a caustic solution via calcium carbonate crystal aggregates10US 8,728,428 B1Carbon Engineering Limited Partnership · 2014