C22B 7/007
By acid leaching
Official title: {by acid leaching}
C22B7/007 (By acid leaching) appears on 511 US grants and 865 published applications in this corpus.
Search patents in C22B- Granted patents
- 511
- Published applications
- 865
- Assignees
- 526
- Inventors
- 2,107
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 4 | 0 |
| 1978 | 1 | 0 |
| 1979 | 7 | 0 |
| 1980 | 8 | 0 |
| 1981 | 3 | 0 |
| 1982 | 4 | 0 |
| 1983 | 4 | 0 |
| 1984 | 8 | 0 |
| 1985 | 5 | 0 |
| 1986 | 3 | 0 |
| 1987 | 5 | 0 |
| 1988 | 3 | 0 |
| 1989 | 5 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 5 | 0 |
| 1993 | 0 | 0 |
| 1994 | 5 | 0 |
| 1995 | 4 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 6 | 0 |
| 1999 | 6 | 0 |
| 2000 | 0 | 0 |
| 2001 | 4 | 2 |
| 2002 | 6 | 2 |
| 2003 | 5 | 5 |
| 2004 | 3 | 8 |
| 2005 | 4 | 5 |
| 2006 | 2 | 8 |
| 2007 | 0 | 5 |
| 2008 | 5 | 11 |
| 2009 | 8 | 16 |
| 2010 | 8 | 15 |
| 2011 | 7 | 20 |
| 2012 | 14 | 17 |
| 2013 | 9 | 21 |
| 2014 | 10 | 14 |
| 2015 | 18 | 36 |
| 2016 | 18 | 22 |
| 2017 | 25 | 38 |
| 2018 | 20 | 15 |
| 2019 | 27 | 30 |
| 2020 | 27 | 35 |
| 2021 | 19 | 42 |
| 2022 | 25 | 51 |
| 2023 | 25 | 81 |
| 2024 | 43 | 140 |
| 2025 | 49 | 128 |
| 2026 | 34 | 98 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Gas-Assisted Microflow Extraction (GAME) system patent6 Oct 2026US 12,753,463 B2Phinix, LLC
- Deployable multi-zone rotary-kiln system and method for recovery of gallium oxide from electronic waste15 Sep 2026US 12,735,769 B1Simple Approach Systems, Inc.
- Impurity control in lithium-ion battery recycling1 Sep 2026US 12,725,847 B2Bluegrass Infrastructure Partners Holdings, LLC
- Methods for battery-grade aqueous solutions of nickel salts18 Aug 2026US 12,709,552 B2Bluegrass Infrastructure Partners Holdings, LLC
- Selective recovery of Li18 Aug 2026US 12,709,786 B2Gelion Technologies Pty Ltd
- Recovery of lithium from black mass24 Sep 2026US 2026/0285700 A1Metso Finland Oy
- Hydrometallurgical Process for Recovering Palladium from a Spent Catalyst24 Sep 2026US 2026/0286463 A1Peroxidos Do Brasil Ltda
- Method for recycling rare earth element24 Sep 2026US 2026/0286467 A1Kabushiki Kaisha Toshiba
- Method of recovering lithium1915153724 Sep 2026US 2026/0290925 A1LG Energy Solution, Ltd.
- Method for obtaining cathode active materials from black mass of batteries and apparatus for obtaining cathode active materials to be used in such method24 Sep 2026US 2026/0290926 A1Circular Materials S.R.L.
Most cited
By later US patents
- Method of recovering metal from metalliferous waste37US 3,966,569 AMX Processor Reinhardt & Co. AB · 1976
- Method for recycling of obsolete printed circuit boards36US 9,215,813 B2Advanced Technology Materials, Inc. · 2015
- Process for treating red mud to recover metal values therefrom34US 6,248,302 B1Goldendale Aluminum Company · 2001
- Formation of coke from heavy crude oils in the presence of calcium carbonate33US 4,521,382 AAlberta Research Council · 1985
- Process for separating and recovering base metals from used hydroprocessing catalyst26US 7,837,960 B2Chevron U.S.A.Inc. · 2010