C22B 13/00
Obtaining lead
C22B13/00 (Obtaining lead) appears on 449 US grants and 252 published applications in this corpus.
Search patents in C22B- Granted patents
- 449
- Published applications
- 252
- Assignees
- 329
- Inventors
- 981
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 17 | 0 |
| 1978 | 16 | 0 |
| 1979 | 13 | 0 |
| 1980 | 11 | 0 |
| 1981 | 9 | 0 |
| 1982 | 10 | 0 |
| 1983 | 19 | 0 |
| 1984 | 13 | 0 |
| 1985 | 15 | 0 |
| 1986 | 11 | 0 |
| 1987 | 11 | 0 |
| 1988 | 9 | 0 |
| 1989 | 7 | 0 |
| 1990 | 7 | 0 |
| 1991 | 3 | 0 |
| 1992 | 8 | 0 |
| 1993 | 12 | 0 |
| 1994 | 9 | 0 |
| 1995 | 16 | 0 |
| 1996 | 9 | 0 |
| 1997 | 6 | 0 |
| 1998 | 14 | 0 |
| 1999 | 7 | 0 |
| 2000 | 6 | 0 |
| 2001 | 1 | 0 |
| 2002 | 3 | 3 |
| 2003 | 6 | 4 |
| 2004 | 5 | 7 |
| 2005 | 5 | 2 |
| 2006 | 1 | 7 |
| 2007 | 0 | 7 |
| 2008 | 1 | 3 |
| 2009 | 6 | 4 |
| 2010 | 3 | 20 |
| 2011 | 9 | 7 |
| 2012 | 10 | 11 |
| 2013 | 8 | 4 |
| 2014 | 2 | 14 |
| 2015 | 5 | 13 |
| 2016 | 9 | 19 |
| 2017 | 16 | 15 |
| 2018 | 9 | 11 |
| 2019 | 12 | 10 |
| 2020 | 13 | 17 |
| 2021 | 11 | 15 |
| 2022 | 9 | 10 |
| 2023 | 11 | 14 |
| 2024 | 11 | 17 |
| 2025 | 12 | 13 |
| 2026 | 6 | 5 |
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.
- Method, apparatus and system for processing a composite waste source26 May 2026US 12,637,737 B2NewSouth Innovations Pty Limited
- Ammonium complex system-based method for separating and purifying lead, zinc, cadmium, and copper31 Mar 2026US 12,590,352 B2GreenNovo Environmental Technology Co., Ltd
- Treated geothermal brine compositions with reduced concentration of silica, iron and lithium3 Feb 2026US 12,540,267 B2Terralithium LLC
- Method for fire refining of complex crude lead21 May 2026US 2026/0139341 A1Kunming University of Science and Technology
- Lead-recovery process30 Apr 2026US 2026/0117341 A1
- Method for extracting lead-212 and bismuth-212 from thorium-232 decay chain12 Mar 2026US 2026/0070049 A1University of South China
- Spent and/or decommissioned lead-acid accumulator treatment plants and/or processes19 Feb 2026US 2026/0049373 A1Engitec Technologies S.P.A.
- Process for heavy metal removal from iron- and steelmaking flue dust12 Feb 2026US 2026/0043110 A1Tata Steel Ijmuiden B.V.
Most cited
By later US patents
- Process for treating metal-contaminated materials48US 5,556,447 APhysical Sciences, Inc. · 1996
- Extraction of trace metals from fly ash43US 4,475,993 AThe United States of America as represented by the United States Department of Energy · 1984
- Metal sulphide extraction36US 4,378,275 ASaudi-Sudanese Red Sea Joint Commission · 1983
- Recovery of base materials from geothermal brines36US 5,229,003 ABHP Minerals International Inc. · 1993
- Process for remediation of lead-contaminated soil and waste battery33US 5,284,503 AExide Corporation · 1994