C01D 5/06
Preparation of sulfates by double decomposition
C01D5/06 (Preparation of sulfates by double decomposition) appears on 35 US grants and 29 published applications in this corpus.
Search patents in C01D- Granted patents
- 35
- Published applications
- 29
- Assignees
- 34
- Inventors
- 89
- Latest grant
- 30 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 1 | 1 |
| 2014 | 2 | 3 |
| 2015 | 1 | 1 |
| 2016 | 1 | 1 |
| 2017 | 1 | 1 |
| 2018 | 1 | 3 |
| 2019 | 1 | 3 |
| 2020 | 2 | 2 |
| 2021 | 2 | 2 |
| 2022 | 0 | 3 |
| 2023 | 2 | 2 |
| 2024 | 0 | 2 |
| 2025 | 2 | 0 |
| 2026 | 0 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Production of strontium sulfate and strontium carbonate from brines30 Sep 2025US 12,428,308 B2
- Process for production of potassium sulfate, ammonium sulfate, and calcium carbonate from syngenite29 Apr 2025US 12,286,358 B2Upcycle Minerals Inc.
- Method for preparing cathode active material precursor for secondary battery, and preparation apparatus using same28 Nov 2023US 11,827,524 B2Posco Future M Co., Ltd.
- Integrated processes for treatment of an ammonium fluorosulfate byproduct of the production of bis (fluorosulfonyl) imide3 Oct 2023US 11,772,967 B2Honeywell International Inc.
- Enhanced surfactant polymer flooding processes for oil recovery in carbonate reservoirs22 Jun 2021US 11,041,109 B2Saudi Arabian Oil Company
- 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
- Method for producing potassium sulfate by metathesis process, potassium sulfate product and potash fertilizer26 Feb 2026US 2026/0055001 A1MiGao Century Engineering Technology (Chengdu) Limited Company
- Knh4so4, caco3, cacl2 fertilizer15 Jan 2026US 2026/0015295 A1Sabic Agri-Nutrients Company
- Processing hard rock lithium minerals or other materials to produce both lithium carbonate and lithium hydroxide7 Nov 2024US 2024/0367990 A1Frontier Lithium Inc.
Most cited
By later US patents
- Process for reduction of sulfur dioxide emission from combustion gases combined with production of potassium sulfate34US 5,624,649 AGeneral Electric Company · 1997
- Process for producing potassium hydroxide and potassium sulfate from sodium sulfate33US 6,375,824 B1Airborne Industrial Minerals Inc. · 2002
- Method of producing potassium sulfate19US 4,215,100 A1980
- Process for the production of potassium sulfate17US 4,129,642 AKali and Salz Aktiengesellschaft · 1978
- Process for the production of coarse K.sub.2 SO.sub.4 in crystallizers and classifiers14US 4,174,382 AKali und Salz Aktiengesellschaft · 1979