C01F 7/62
Purification
C01F7/62 (Purification) appears on 28 US grants and 18 published applications in this corpus.
Search patents in C01F- Granted patents
- 28
- Published applications
- 18
- Assignees
- 29
- Inventors
- 89
- Latest grant
- 5 Sep 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 6 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 1 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 1 | 2 |
| 2018 | 1 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 1 | 0 |
| 2024 | 0 | 2 |
| 2025 | 0 | 2 |
| 2026 | 0 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- High purity aluminum oxide via electrodialysis5 Sep 2023US 11,746,021 B2Nextchem S.P.A.
- Processes for the selective separation of iron and aluminium2 Oct 2018US 10,087,501 B2Shanxi Ruienze Technology Co., Ltd.
- Methods for purifying aluminium ions3 Jan 2017US 9,534,274 B2Orbite Technologies Inc.
- Method for preparing metallurgical-grade alumina by using fluidized bed fly ash29 Oct 2013US 8,568,671 B2China Shenhua Energy Company Limited
- Ultra high purity halides and their preparation20 Mar 1990US 4,910,009 ATeledyne Industries, Inc.
- Method for producing iron chloride and aluminum chloride from sewage sludge ashes17 Sep 2026US 2026/0274701 A1LANXESS Deutschland GmbH
- Purification method for anhydrous aluminum chloride, and gas-phase nano-alumina preparation device and method therefor17 Sep 2026US 2026/0274702 A1Guangzhou Huifu Research Institute Co., Ltd.
- A method for producing a doped aluminous material20 Aug 2026US 2026/0242232 A1Lava Blue Ltd
- A method for the preparation of alumina13 Aug 2026US 2026/0234017 A1Playa One Pty Ltd
- A method for producing an aluminous material4 Jun 2026US 2026/0152408 A1
Most cited
By later US patents
- Process for the production of aluminum chloride and related products15US 4,083,923 AToth Aluminum Corporation · 1978
- Fluidized bed desubliming apparatus for recovery of aluminum chloride13US 3,930,800 AAluminum Company of America · 1976
- Purification of aluminum chloride12US 3,938,969 AToth Aluminum Corporation · 1976
- Process for the purification of aluminum chloride11US 4,035,169 AToth Aluminum Corporation · 1977
- Process for recovery of aluminum chloride10US 4,478,600 AAluminum Company of America · 1984