C22B 13/04
Obtaining lead: by wet processes
Official title: {by wet processes}
C22B13/04 (Obtaining lead: by wet processes) appears on 204 US grants and 143 published applications in this corpus.
Search patents in C22B- Granted patents
- 204
- Published applications
- 143
- Assignees
- 181
- Inventors
- 488
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 3 | 0 |
| 1978 | 4 | 0 |
| 1979 | 5 | 0 |
| 1980 | 4 | 0 |
| 1981 | 6 | 0 |
| 1982 | 4 | 0 |
| 1983 | 4 | 0 |
| 1984 | 4 | 0 |
| 1985 | 3 | 0 |
| 1986 | 4 | 0 |
| 1987 | 6 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 8 | 0 |
| 1996 | 6 | 0 |
| 1997 | 5 | 0 |
| 1998 | 8 | 0 |
| 1999 | 4 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 2 |
| 2003 | 4 | 1 |
| 2004 | 4 | 4 |
| 2005 | 4 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 2 | 2 |
| 2010 | 0 | 8 |
| 2011 | 2 | 2 |
| 2012 | 4 | 5 |
| 2013 | 3 | 4 |
| 2014 | 2 | 8 |
| 2015 | 3 | 10 |
| 2016 | 6 | 10 |
| 2017 | 10 | 13 |
| 2018 | 6 | 8 |
| 2019 | 9 | 5 |
| 2020 | 9 | 11 |
| 2021 | 8 | 7 |
| 2022 | 4 | 4 |
| 2023 | 5 | 10 |
| 2024 | 4 | 12 |
| 2025 | 9 | 12 |
| 2026 | 4 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Integrated recovery of metals from complex substrates22 Sep 2026US 12,742,224 B2Yava International Inc.
- Process with low environmental impact and reduced energy consumption for the recovery of lead from the electrode pastes of end-of-life batteries21 Jul 2026US 12,689,074 B2Metallon Clean Extractions B.V.
- Ammonium complex system-based method for separating and purifying lead, zinc, cadmium, and copper31 Mar 2026US 12,590,352 B2GreenNovo Environmental Technology Co., Ltd
- Functionalized silica nanoparticles for lead adsorption27 Jan 2026US 12,533,653 B2King Saud University
- Molten lead scrap submergence apparatus11 Nov 2025US 12,467,118 B2Pyrotek, Inc.
- Method for extracting lead-212 and bismuth-212 from thorium-232 decay chain12 Mar 2026US 2026/0070049 A1University of South China
- Process for heavy metal removal from iron- and steelmaking flue dust12 Feb 2026US 2026/0043110 A1Tata Steel Ijmuiden B.V.
- Spent and/or decommissioned lead-acid accumulator treatment plants and/or processes25 Dec 2025US 2025/0391945 A1Engitec Technologies S.P.A.
- Automated method and device for production of lead 212 for use in targeted alpha-particle therapy4 Dec 2025US 2025/0367574 A1RadioMedix Inc.
- Functionalized silica nanoparticles for lead adsorption27 Nov 2025US 2025/0360484 A1King Saud University
Most cited
By later US patents
- Metal sulphide extraction36US 4,378,275 ASaudi-Sudanese Red Sea Joint Commission · 1983
- Process for recovering lead oxides from exhausted batteries33US 7,507,496 B1Kinsbursky Brothers Inc · 2009
- Processes for removing, separating and concentrating lead, thallium, alkali metals, alkaline earth metals from concentrated matrices using macrocyclic polyether cryptand ligands bonded to inorganic supports32US 5,393,892 AIBC Advanced Technologies, Inc. · 1995
- Hydrometallurgical process for an overall recovery of the components of exhausted lead-acid batteries31US 4,769,116 AEngitec Impianti S.p.A. · 1988
- Hydrometallurgical method for recovering metal materials from spent lead-acid storage batteries29US 4,460,442 AHydrometal S.p.A. · 1984