C01D 3/08
Preparation by working up natural or industrial salt mixtures or siliceous minerals
C01D3/08 (Preparation by working up natural or industrial salt mixtures or siliceous minerals) appears on 78 US grants and 50 published applications in this corpus.
Search patents in C01D- Granted patents
- 78
- Published applications
- 50
- Assignees
- 76
- Inventors
- 221
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 5 | 0 |
| 1986 | 3 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 4 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 3 |
| 2006 | 0 | 0 |
| 2007 | 2 | 0 |
| 2008 | 0 | 3 |
| 2009 | 1 | 1 |
| 2010 | 2 | 0 |
| 2011 | 2 | 5 |
| 2012 | 2 | 2 |
| 2013 | 2 | 2 |
| 2014 | 2 | 3 |
| 2015 | 1 | 3 |
| 2016 | 4 | 4 |
| 2017 | 3 | 2 |
| 2018 | 3 | 1 |
| 2019 | 1 | 4 |
| 2020 | 1 | 1 |
| 2021 | 1 | 6 |
| 2022 | 1 | 1 |
| 2023 | 3 | 3 |
| 2024 | 1 | 3 |
| 2025 | 1 | 2 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Methods for removing potassium, rubidium, and cesium, selectively or in combination, from brines and resulting compositions thereof12 May 2026US 12,623,911 B2Terralithium LLC
- Systems and methods for recovering salts, aluminum, alumina and ammonia from salt slag waste generated in aluminum recycling4 Feb 2025US 12,215,037 B2Evergreen Alumina, LLC
- Reactor for separation of sodium chloride and potassium chloride from polymineral sources and method thereof23 Jul 2024US 12,043,552 B2Limited Liability Company “Gsm Chemical”
- Method for preparing potassium chloride from carnallite26 Dec 2023US 11,851,340 B2Qinghai Institute of Salt Lakes, Chinese Academy of Sciences
- Systems and methods for recovering salts, aluminum, alumina and ammonia from salt slag waste generated in aluminum recycling5 Dec 2023US 11,834,343 B2
- Method for treating salt-containing dusts18 Dec 2025US 2025/0382192 A1
- Pond System for Effective Sodium Carbonate Separation from Sodium Chloride6 Nov 2025US 2025/0340446 A1Genesis Alkali Wyoming, LP
- Device and method for harmless treatment and regeneration of waste liquid discharge during water glass mold shell hardened with ammonium chloride solution28 Nov 2024US 2024/0390828 A1Inner Mongolia University of Technology
- Systems and methods for recovering salts, aluminum, alumina and ammonia from salt slag waste generated in aluminum recycling14 Mar 2024US 2024/0083762 A1Evergreen Alumina, LLC
- Pyrolytic extraction of hydrochloric acid from magnesium salt mixtures, especially bitterns4 Jan 2024US 2024/0002227 A1Luna Innovations Incorporated
Most cited
By later US patents
- Process for reclaiming cement kiln dust and recovering chemical values therefrom84US 4,031,184 A1977
- Disposal of PCB36US 4,246,255 ARockwell International Corporation · 1981
- Salt plant evaporation28US 5,366,514 ATexas Brine Corporation · 1994
- Method of reforming soluble salts to effect purification and increase crystal size thereof20US 5,300,123 A1994
- Methods for treating agricultural drainage water and the like19US 7,501,065 B12009