C01F 7/0693
From waste-like raw materials
Official title: from waste-like raw materials, e.g. fly ash or Bayer calcination dust
C01F7/0693 (From waste-like raw materials) appears on 11 US grants and 9 published applications in this corpus.
Search patents in C01F- Granted patents
- 11
- Published applications
- 9
- Assignees
- 11
- Inventors
- 46
- Latest grant
- 9 Jan 2024
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 | 1 | 0 |
| 1986 | 0 | 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 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 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 | 1 | 0 |
| 2012 | 1 | 2 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 1 | 1 |
| 2020 | 0 | 0 |
| 2021 | 1 | 0 |
| 2022 | 0 | 1 |
| 2023 | 1 | 1 |
| 2024 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Preparation of rare earth metals and other chemicals from industrial waste coal ash9 Jan 2024US 11,866,804 B2Purdue Research Foundation
- Method for recycling iron and aluminum in nickel-cobalt-manganese solution19 Sep 2023US 11,760,655 B2Guangdong Brunp Recycling Technology Co., Ltd.
- Preparation of rare earth metals and other chemicals from industrial waste coal ash30 Nov 2021US 11,186,894 B2Purdue Research Foundation
- Method of recovering rare earth aluminum and silicon from rare earth-containing aluminum-silicon scraps7 May 2019US 10,280,482 B2Grirem Advanced Materials Co., Ltd.
- Method for co-producing alumina and activated calcium silicate from high-alumina fly ash22 Sep 2015US 9,139,445 B2Inner Mongolia Datang International Recycling Resource Development Co., Ltd.
- Preparation of rare earth metals and other chemicals from industrial waste coal ash15 Aug 2024US 2024/0271247 A1Purdue Research Foundation
- Method for recycling iron and aluminum in nickel-cobalt-manganese solution20 Jul 2023US 2023/0227325 A1Guangdong Brunp Recycling Technology Co., Ltd.
- Preparation of rare earth metals and other chemicals from industrial waste coal ash23 Jun 2022US 2022/0195559 A1Purdue Research Foundation
- Preparation of rare earth metals and other chemicals from industrial waste coal ash23 May 2019US 2019/0153562 A1Purdue Research Foundation
- Method of recovering rare earth aluminum and silicon from rare earth-containing aluminum-silicon scraps20 Dec 2018US 2018/0363098 A1Grirem Advanced Materials Co., Ltd.
Most cited
By later US patents
- Coarsening of partially calcined alumina dust33US 4,051,222 AAlcan Research and Development Limited · 1977
- Recycling of spent pot linings20US 5,470,559 AAlcan International Limited · 1995
- Process for recovery of silica followed by alumina from coal fly ash5US 7,871,583 B2Pingshuo Industrial Ltd · 2011
- Preparation of rare earth metals and other chemicals from industrial waste coal ash2US 11,186,894 B2Purdue Research Foundation · 2021
- Process for recycling waste aluminum dross2US 6,296,817 B12001