C22B 3/00
Extraction of metal compounds from ores or concentrates by wet processes
C22B3/00 (Extraction of metal compounds from ores or concentrates by wet processes) appears on 4,281 US grants and 3,820 published applications in this corpus.
Search patents in C22B- Granted patents
- 4,281
- Published applications
- 3,820
- Assignees
- 2,300
- Inventors
- 9,630
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 93 | 0 |
| 1977 | 95 | 0 |
| 1978 | 75 | 0 |
| 1979 | 63 | 0 |
| 1980 | 99 | 0 |
| 1981 | 106 | 0 |
| 1982 | 94 | 0 |
| 1983 | 89 | 0 |
| 1984 | 83 | 0 |
| 1985 | 82 | 0 |
| 1986 | 92 | 0 |
| 1987 | 68 | 0 |
| 1988 | 87 | 0 |
| 1989 | 64 | 0 |
| 1990 | 76 | 0 |
| 1991 | 70 | 0 |
| 1992 | 61 | 0 |
| 1993 | 76 | 0 |
| 1994 | 74 | 0 |
| 1995 | 62 | 0 |
| 1996 | 48 | 0 |
| 1997 | 53 | 0 |
| 1998 | 60 | 0 |
| 1999 | 64 | 0 |
| 2000 | 53 | 0 |
| 2001 | 69 | 19 |
| 2002 | 79 | 54 |
| 2003 | 47 | 67 |
| 2004 | 61 | 97 |
| 2005 | 43 | 83 |
| 2006 | 39 | 75 |
| 2007 | 47 | 85 |
| 2008 | 37 | 103 |
| 2009 | 69 | 100 |
| 2010 | 88 | 140 |
| 2011 | 72 | 109 |
| 2012 | 81 | 103 |
| 2013 | 95 | 105 |
| 2014 | 86 | 108 |
| 2015 | 89 | 165 |
| 2016 | 90 | 143 |
| 2017 | 101 | 124 |
| 2018 | 120 | 130 |
| 2019 | 135 | 136 |
| 2020 | 120 | 157 |
| 2021 | 96 | 165 |
| 2022 | 110 | 182 |
| 2023 | 98 | 293 |
| 2024 | 160 | 344 |
| 2025 | 208 | 395 |
| 2026 | 154 | 338 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Gas-Assisted Microflow Extraction (GAME) system patent6 Oct 2026US 12,753,463 B2Phinix, LLC
- Integrated recovery of metals from complex substrates22 Sep 2026US 12,742,224 B2Yava International Inc.
- Method for separating nickel from lithium, and application thereof22 Sep 2026US 12,742,225 B2Suzhou Botree Cycling Sci & Tech Co., Ltd
- Integration of carbon sequestration with selective hydrometallurgical recovery of metal values22 Sep 2026US 12,742,226 B2Negative Emissions Materials, Inc.
- Method for recovering lithium and method for processing lithium ion secondary battery22 Sep 2026US 12,744,261 B2Dowa Eco-System Co., Ltd.
- Oxime-based adsorbents and methods of use for selective separation of rare earth elements8 Oct 2026US 2026/0307049 A1The Board of Regents of the University of Oklahoma
- Synthesis of bio-based catecholic acid- and derivatives-functionalized adsorbents for recovery of metals and metalloids from acidic solutions8 Oct 2026US 2026/0307051 A1The Penn State Research Foundation
- Lime and hydraulic cement manufacture by electrolysis using hyaloclastite or lava, carbon mineralization by hyaloclastite or lava electrolysis and method of making and using same8 Oct 2026US 2026/0308006 A1Greencraft LLC
- Process for the extraction of a by-product metal from a mineral concentrate8 Oct 2026US 2026/0308710 A1
- Systems and methods for improved metal recovery by leaching8 Oct 2026US 2026/0308711 A1Freeport Minerals Corporation
Most cited
By later US patents
- Surface-functionalized mesoporous carbon materials255US 9,249,241 B2UT-Battelle, LLC · 2016
- Adsorbent compositions173US 4,474,896 AUnion Carbide Corporation · 1984
- Process for the reduction of metallic compounds by polyols, and metallic powders obtained by this process101US 4,539,041 AUniversite Paris VII · 1985
- Process for the purification of lithium carbonate95US 6,048,507 ALimtech · 2000
- Recovery of lithium from brine85US 4,291,001 AThe Dow Chemical Company · 1981