C01F 11/16
Purification
C01F11/16 (Purification) appears on 14 US grants and 11 published applications in this corpus.
Search patents in C01F- Granted patents
- 14
- Published applications
- 11
- Assignees
- 10
- Inventors
- 35
- Latest grant
- 23 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1986 | 1 | 0 |
| 1987 | 0 | 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 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 1 | 0 |
| 2013 | 1 | 1 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 1 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 3 |
| 2022 | 0 | 0 |
| 2023 | 3 | 3 |
| 2024 | 1 | 1 |
| 2025 | 2 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Facile, low-energy routes for the production of hydrated calcium and magnesium salts from alkaline industrial wastes23 Dec 2025US 12,503,372 B2The Regents of the University of California
- Method for removing carbon dioxide from a material1 Apr 2025US 12,264,080 B2
- Method of preparing activated mineral solution13 Feb 2024US 11,897,824 B2
- Efficient limestone processor with carbon capture capability19 Dec 2023US 11,845,669 B2
- Method of preparing ionized calcium oxide powder5 Dec 2023US 11,834,342 B2
- Method for preparing lithium hydroxide by using lithium carbonate and barium compound9 Jan 2025US 2025/0011181 A1Industry Foundation of Chonnam National University
- Method for removing carbon dioxide from a material2 May 2024US 2024/0140814 A1
- Calcination Process19 Oct 2023US 2023/0331574 A1Origen Power Ltd
- Efficient limestone processor with carbon capture capability14 Sep 2023US 2023/0286821 A1
- Facile, low-energy routes for the production of hydrated calcium and magnesium salts from alkaline industrial wastes25 May 2023US 2023/0159346 A1The Regents of the University of California
Most cited
By later US patents
- Process for purifying highly impure calcium hydroxide and for producing high-value precipitated calcium carbonate and other calcium products13US 5,846,500 AJames W. Bunger and Associates, Inc. · 1998
- Apparatus and process for purifying highly impure calcium hydroxide and for producing high-value precipitated calcium carbonate and other calcium products10US 5,997,833 AJames W. Bunger and Associates, Inc. · 1999
- Lime cleaning process to remove manganese oxide5US 4,609,534 AAluminum Company of America · 1986
- Method of separating impurities from lime and lime sludge4US 6,074,521 AAhlstrom Machinery Inc. · 2000
- Facile, low-energy routes for the production of hydrated calcium and magnesium salts from alkaline industrial wastes1US 11,560,318 B2The Regents of the University of California · 2023