C22B 3/06
In inorganic acid solutions
Official title: in inorganic acid solutions {, e.g. with acids generated in situ; in inorganic salt solutions other than ammonium salt solutions}
C22B3/06 (In inorganic acid solutions) appears on 930 US grants and 1,232 published applications in this corpus.
Search patents in C22B- Granted patents
- 930
- Published applications
- 1,232
- Assignees
- 761
- Inventors
- 2,765
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 16 | 0 |
| 1977 | 17 | 0 |
| 1978 | 15 | 0 |
| 1979 | 8 | 0 |
| 1980 | 9 | 0 |
| 1981 | 6 | 0 |
| 1982 | 9 | 0 |
| 1983 | 5 | 0 |
| 1984 | 4 | 0 |
| 1985 | 5 | 0 |
| 1986 | 11 | 0 |
| 1987 | 7 | 0 |
| 1988 | 3 | 0 |
| 1989 | 4 | 0 |
| 1990 | 7 | 0 |
| 1991 | 10 | 0 |
| 1992 | 8 | 0 |
| 1993 | 13 | 0 |
| 1994 | 10 | 0 |
| 1995 | 13 | 0 |
| 1996 | 9 | 0 |
| 1997 | 6 | 0 |
| 1998 | 7 | 0 |
| 1999 | 12 | 0 |
| 2000 | 3 | 0 |
| 2001 | 9 | 4 |
| 2002 | 20 | 15 |
| 2003 | 12 | 11 |
| 2004 | 8 | 21 |
| 2005 | 11 | 13 |
| 2006 | 3 | 15 |
| 2007 | 6 | 21 |
| 2008 | 6 | 23 |
| 2009 | 20 | 27 |
| 2010 | 24 | 30 |
| 2011 | 23 | 27 |
| 2012 | 19 | 26 |
| 2013 | 14 | 24 |
| 2014 | 16 | 26 |
| 2015 | 20 | 47 |
| 2016 | 29 | 51 |
| 2017 | 27 | 51 |
| 2018 | 36 | 42 |
| 2019 | 39 | 41 |
| 2020 | 49 | 56 |
| 2021 | 35 | 57 |
| 2022 | 39 | 67 |
| 2023 | 41 | 109 |
| 2024 | 72 | 148 |
| 2025 | 82 | 155 |
| 2026 | 53 | 125 |
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
- Integration of carbon sequestration with selective hydrometallurgical recovery of metal values22 Sep 2026US 12,742,226 B2Negative Emissions Materials, Inc.
- Binder for an agglomeration process8 Sep 2026US 12,729,161 B2Mintek
- System and method for activating deep raffinate injection based on ore placement8 Sep 2026US 12,731,086 B2Freeport Minerals Corporation
- Acid impacts on a leach stockpile8 Sep 2026US 12,731,087 B2Freeport Minerals Corporation
- 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
- Method of recovery of scandium8 Oct 2026US 2026/0308716 A1Nippon Steel Corporation
- Acid impacts on a leach stockpile1 Oct 2026US 2026/0300850 A1Freeport Minerals Corporation
- System and method for adjusting leaching operations based on leach analytic data24 Sep 2026US 2026/0289438 A1Freeport Minerals Corporation
Most cited
By later US patents
- Method for the removal of elemental mercury from a gas stream82US 5,900,042 AThe United States of America as represented by the United States Department of Energy · 1999
- Thin layer leaching method81US 4,017,309 AHolmes & Narver, Inc. · 1977
- Inorganic perbromide compositions and methods of use thereof61US 5,607,619 AGreat Lakes Chemical Corporation · 1997
- Recovery of gold from refractory auriferous iron-containing sulphidic ore55US 4,571,264 ASherritt Gordon Mines Limited · 1986
- Oxidation/reduction process for recovery of precious metals from MnO.sub.2 ores, sulfidic ores and carbonaceous materials54US 5,232,490 ALeadville Silver and Gold · 1993