C01F 11/32
Purification
C01F11/32 (Purification) appears on 12 US grants and 12 published applications in this corpus.
Search patents in C01F- Granted patents
- 12
- Published applications
- 12
- Assignees
- 15
- Inventors
- 36
- Latest grant
- 2 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 2 |
| 2006 | 1 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 3 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 1 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Separation of BACL2 from CACL2 brine solution2 Sep 2025US 12,404,181 B2The Chemours Company Fc, LLC
- Method and arrangement for recovery of salt15 Sep 2020US 10,773,971 B2Easymining Sweden AB
- Method for production of calcium compounds18 Sep 2012US 8,268,280 B2Elkem Solar AS
- Calcium chloride purification2 May 2006US 7,037,480 B2Sunoco, Inc. (R&M)
- Process for recovering the salt constituents from hardening-shop salt baths23 Jun 1998US 5,769,906 ADurferrit GmbH Thermotechnik
- Magnesium chloride purification systems, devices and methods14 May 2026US 2026/0132041 A1
- Separation of bacl2 from cacl2 brine solution20 Nov 2025US 2025/0353755 A1The Chemours Company Fc, LLC
- Valorization of Waste Streams11 Jan 2024US 2024/0010516 A1Lixivia, Inc.
- Separation of bacl2 from cacl2 brine solution8 Sep 2022US 2022/0281754 A1The Chemours Company Fc, LLC
- Process for sequestering sodium chloride and calcium chloride from a non-saleable salt waste product produced from oil and gas produced wastewater26 Dec 2019US 2019/0389737 A1The Clean Water Company Limited
Most cited
By later US patents
- Antiflocculating agents for metal halide solutions18US 4,753,740 AEthyl Corporation · 1988
- Purification of barium values14US 4,834,952 ARhone-Poulenc Chimie · 1989
- Calcium chloride purification8US 7,037,480 B2Sunoco, Inc. (R&M) · 2006
- Process for recovering the salt constituents from hardening-shop salt baths7US 5,769,906 ADurferrit GmbH Thermotechnik · 1998
- Process for separating barium from water-soluble strontium salts3US 4,980,135 AKali-Chemie Aktiengesellschaft · 1990