C22B 13/08
Separating metals from lead by precipitating
Official title: Separating metals from lead by precipitating, e.g. Parkes process
C22B13/08 (Separating metals from lead by precipitating) appears on 9 US grants and 8 published applications in this corpus.
Search patents in C22B- Granted patents
- 9
- Published applications
- 8
- Assignees
- 9
- Inventors
- 18
- Latest grant
- 4 Jun 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 2 | 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 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 2 |
| 2011 | 0 | 0 |
| 2012 | 1 | 1 |
| 2013 | 1 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 1 |
| 2021 | 0 | 1 |
| 2022 | 2 | 0 |
| 2023 | 0 | 1 |
| 2024 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Metal and tin alloy having low alpha-ray emission, and method for producing same4 Jun 2024US 12,000,020 B2Mitsubishi Materials Corporation
- Method for the treatment of iron-containing sludge6 Dec 2022US 11,519,053 B2ArcelorMittal
- Agent for selective antimony and arsenic removal and tin retaining for refining secondary crude lead, and use method thereof16 Aug 2022US 11,414,724 B2Jiangsu New Chunxing Resource Recycling Co. Ltd
- Process for refining lead bullion6 Aug 2013US 8,500,845 B2Stannum Group LLC
- Process for refining lead bullion3 Jul 2012US 8,211,207 B2Stannum Group LLC
- Metal and tin alloy having low alpha-ray emission, and method for producing same23 Mar 2023US 2023/0085708 A1Mitsubishi Materials Corporation
- Agent for selective antimony and arsenic removal and tin retaining for refining secondary crude lead, and use method thereof1 Jul 2021US 2021/0198770 A1Jiangsu New Chunxing Resource Recycling Co. Ltd
- Metal and tin alloy having low alpha-ray emission, and method for producing same10 Dec 2020US 2020/0385843 A1Mitsubishi Materials Corporation
- Method for the Treatment of Iron-Containing Sludge13 Jun 2019US 2019/0177815 A1ArcelorMittal
- Process for refining lead bullion13 Sep 2012US 2012/0227544 A1Stannum Group LLC
Most cited
By later US patents
- Metal sulphide extraction36US 4,378,275 ASaudi-Sudanese Red Sea Joint Commission · 1983
- Recovery of copper and zinc from complex chloride solutions12US 4,362,607 ACanadian Patents and Development Limited · 1982
- Continuous process of smelting metallic lead directly from lead-and sulfur-containing materials6US 4,376,649 AMetallgesellschaft Aktiengesellschaft · 1983
- Process for purifying lead using calcium/sodium filter cake3US 5,100,466 AE. I. Du Pont de Nemours and Company · 1992
- Process for refining lead bullion1US 8,500,845 B2Stannum Group LLC · 2013