C01F 7/066
Treatment of the separated residue
C01F7/066 (Treatment of the separated residue) appears on 57 US grants and 54 published applications in this corpus.
Search patents in C01F- Granted patents
- 57
- Published applications
- 54
- Assignees
- 49
- Inventors
- 190
- Latest grant
- 20 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 4 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 2 |
| 2004 | 1 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 2 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 1 | 4 |
| 2010 | 0 | 3 |
| 2011 | 1 | 1 |
| 2012 | 1 | 1 |
| 2013 | 1 | 2 |
| 2014 | 4 | 6 |
| 2015 | 5 | 7 |
| 2016 | 1 | 7 |
| 2017 | 6 | 2 |
| 2018 | 6 | 1 |
| 2019 | 2 | 0 |
| 2020 | 2 | 3 |
| 2021 | 0 | 0 |
| 2022 | 2 | 1 |
| 2023 | 0 | 4 |
| 2024 | 1 | 2 |
| 2025 | 0 | 1 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Acid wash of red mud (bauxite residue)20 Jan 2026US 12,528,709 B2Worcester Polytechnic Institute
- Acid wash of red mud (bauxite residue)30 Jul 2024US 12,049,409 B2Worcester Polytechnic Institute
- Method of treatment of bauxite residue, solid obtained by this method and bauxite treatment process including this method of treatment of the bauxite residue20 Sep 2022US 11,447,420 B2Purgonpl Group Limited
- Method for aluminum-enhanced dealkalization of red mud and separation and recovery of aluminum and iron17 May 2022US 11,332,380 B2Kunming University of Science and Technology
- System and method for desulfurization and denitrification integrated treatment and recycling of flue gas by using red mud24 Nov 2020US 10,843,131 B2Kunming University of Science and Technology
- Method for resource recovery from a bauxite residue6 Aug 2026US 2026/0225111 A1Ermafa Environmental Technologies GmbH
- Method for digesting bauxite slurry25 Jun 2026US 2026/0176151 A1Zhengzhou Non-Ferrous Metals Research Institute Co. Ltd of Chalco
- Purification of mineral ores using cationic copolymers12 Mar 2026US 2026/0070069 A1Ecolab USA Inc.
- The production method of lithium carbonate used in the cathode material of lithium-ion batteries from buxite ore6 Nov 2025US 2025/0340449 A1Eti AlüMinyum Anonim Sirket
- Highly dense red mud shields for x-ray and gamma-ray attenuation18 Jan 2024US 2024/0018050 A1Council of Scientific and Industrial Research
Most cited
By later US patents
- Plasma whirl reactor apparatus and methods of use164US 7,622,693 B2Foret Plasma Labs, LLC · 2009
- Rheology modification of settled solids in mineral processing44US 6,365,116 B1Nalco Chemical Company · 2002
- Plasma whirl reactor apparatus and methods of use43US 8,324,523 B2Foret Plasma Labs, LLC · 2012
- Recovery of rare earth elements from Bayer process red mud40US 5,030,424 AAlcan International Limited · 1991
- Plasma whirl reactor apparatus and methods of use30US 8,357,873 B2Foret Plasma Labs, LLC · 2013