C01D 3/14
Purification
C01D3/14 (Purification) appears on 194 US grants and 111 published applications in this corpus.
Search patents in C01D- Granted patents
- 194
- Published applications
- 111
- Assignees
- 121
- Inventors
- 465
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 9 | 0 |
| 1978 | 9 | 0 |
| 1979 | 5 | 0 |
| 1980 | 7 | 0 |
| 1981 | 11 | 0 |
| 1982 | 5 | 0 |
| 1983 | 9 | 0 |
| 1984 | 9 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 4 | 0 |
| 1989 | 6 | 0 |
| 1990 | 4 | 0 |
| 1991 | 8 | 0 |
| 1992 | 7 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 4 | 0 |
| 1998 | 4 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 5 | 2 |
| 2002 | 4 | 1 |
| 2003 | 1 | 8 |
| 2004 | 4 | 6 |
| 2005 | 5 | 5 |
| 2006 | 3 | 6 |
| 2007 | 2 | 3 |
| 2008 | 0 | 3 |
| 2009 | 0 | 2 |
| 2010 | 2 | 9 |
| 2011 | 4 | 6 |
| 2012 | 2 | 5 |
| 2013 | 4 | 5 |
| 2014 | 4 | 3 |
| 2015 | 2 | 5 |
| 2016 | 1 | 5 |
| 2017 | 3 | 7 |
| 2018 | 2 | 4 |
| 2019 | 2 | 1 |
| 2020 | 1 | 1 |
| 2021 | 4 | 6 |
| 2022 | 1 | 5 |
| 2023 | 1 | 3 |
| 2024 | 4 | 3 |
| 2025 | 2 | 4 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Corrosion-resistant coolant salt and method for making same21 Apr 2026US 12,606,452 B2TerraPower, LLC
- Method of purifying sodium bromide from waste circuit boards pyrolysis coke27 Jan 2026US 12,534,376 B2Beijing University of Technology
- Process for purifying potassium chloride19 Aug 2025US 12,391,564 B2Klinge Chemicals Ltd.
- Method for recovering water and chemicals from plants for treating effluents from pulp and paper factories12 Aug 2025US 12,384,708 B2Investigaciones Forestales Bioforest S.A.
- Recovery of bromine from waste bromide brines27 Aug 2024US 12,071,353 B2Reaction 35, LLC
- Corrosion-resistant coolant salt and method for making same16 Jul 2026US 2026/0200750 A1TerraPower, LLC
- Methods of in situ corrosion mitigation in molten salt processes, and related systems18 Jun 2026US 2026/0167510 A1Battelle Energy Alliance, LLC
- Method and device for simulated moving bed extraction by lithium adsorption11 Jun 2026US 2026/0158416 A1Ifp Energies Nouvelles
- Pond System for Effective Sodium Carbonate Separation from Sodium Chloride6 Nov 2025US 2025/0340446 A1Genesis Alkali Wyoming, LP
- Movable device for extracting lithium salts from brine of salt lakes15 May 2025US 2025/0153106 A1Xi'an Lanshen New Material Technology Co., Ltd.
Most cited
By later US patents
- Recovery of lithium from brines91US 4,116,858 AThe Dow Chemical Company · 1978
- Recovery of lithium from brines90US 4,159,311 AThe Dow Chemical Company · 1979
- Recovery of lithium from brine85US 4,291,001 AThe Dow Chemical Company · 1981
- Process for removal of silica from geothermal brine72US 4,016,075 ASouthern Pacific Land Co. · 1977
- Process and apparatus for controlling impurities and pollution from membrane chlor-alkali cells58US 4,242,185 AIonics, Incorporated · 1980