C01F 7/748
Purification
C01F7/748 (Purification) appears on 8 US grants and 5 published applications in this corpus.
Search patents in C01F- Granted patents
- 8
- Published applications
- 5
- Assignees
- 7
- Inventors
- 17
- Latest grant
- 5 Sep 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 3 |
| 2018 | 0 | 0 |
| 2019 | 3 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- High purity aluminum oxide via electrodialysis5 Sep 2023US 11,746,021 B2Nextchem S.P.A.
- Extraction of products from titanium-bearing minerals10 Sep 2019US 10,407,316 B2Avertana Limited
- Extraction of products from titanium-bearing minerals21 May 2019US 10,294,117 B2Avertana Limited
- Extraction of products from titanium-bearing minerals14 May 2019US 10,287,176 B2Avertana Limited
- Purification process17 May 2005US 6,893,474 B2Feralco AB
- High purity aluminum oxide via electrodialysis22 Oct 2020US 2020/0331769 A1Nextchem S.P.A.
- Extraction of products from titanium-bearing minerals6 Jul 2017US 2017/0190592 A1Avertana Limited
- Extraction of products from titanium-bearing minerals22 Jun 2017US 2017/0174525 A1Avertana Limited
- Extraction of products from titanium-bearing minerals8 Jun 2017US 2017/0158523 A1Avertana Limited
- Purification process6 Mar 2003US 2003/0041415 A1Feralco AB
Most cited
By later US patents
- Method of removing iron from concentrated alum solutions28US 5,093,091 AAmerican Cyanamid Company · 1992
- Purification process14US 6,893,474 B2Feralco AB · 2005
- Method for producing electrolytic-pot-cell grade alumina from aluminum sulphate6US 5,720,868 ASolv-Ex Corporation · 1998
- Production of aluminum sulfate5US 4,039,615 ANittetsu Mining Co., Ltd. · 1977
- Extraction of products from titanium-bearing minerals1US 10,287,176 B2Avertana Limited · 2019