C22B 3/12
In inorganic alkaline solutions
Official title: in inorganic alkaline solutions
C22B3/12 (In inorganic alkaline solutions) appears on 234 US grants and 281 published applications in this corpus.
Search patents in C22B- Granted patents
- 234
- Published applications
- 281
- Assignees
- 241
- Inventors
- 801
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 6 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 4 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 5 | 0 |
| 1995 | 5 | 0 |
| 1996 | 5 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 5 | 0 |
| 2000 | 0 | 0 |
| 2001 | 3 | 0 |
| 2002 | 2 | 2 |
| 2003 | 2 | 1 |
| 2004 | 3 | 6 |
| 2005 | 0 | 2 |
| 2006 | 1 | 3 |
| 2007 | 4 | 4 |
| 2008 | 0 | 2 |
| 2009 | 3 | 5 |
| 2010 | 6 | 10 |
| 2011 | 1 | 2 |
| 2012 | 5 | 6 |
| 2013 | 4 | 6 |
| 2014 | 9 | 15 |
| 2015 | 6 | 10 |
| 2016 | 10 | 19 |
| 2017 | 7 | 14 |
| 2018 | 9 | 11 |
| 2019 | 21 | 15 |
| 2020 | 14 | 13 |
| 2021 | 8 | 12 |
| 2022 | 8 | 16 |
| 2023 | 7 | 34 |
| 2024 | 16 | 26 |
| 2025 | 12 | 19 |
| 2026 | 18 | 28 |
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.
- Carbonation and selective leaching for the recovery of metals11 Aug 2026US 12,703,894 B2Phoenix Tailings, Inc.
- Method for producing copper metal from copper concentrates without generating waste26 May 2026US 12,637,738 B2Universidad De Concepcion
- Method for recovering metal zinc from solid metallurgical wastes19 May 2026US 12,630,900 B2Engitec Technologies S.P.A.
- Method for the preparation of mixed rare earth metal carbonates from monazite10 Sep 2026US 2026/0265076 A1Tecnicas Reunidas S. A.
- Inorganic substance solution production method, and inorganic substance solution production apparatus10 Sep 2026US 2026/0265866 A1National Institutes for Quantum Science and Technology
- Method For Recovering Rare Earths And Coproducts From Phosphogypsum And Phosphoric Acid Sludge10 Sep 2026US 2026/0265867 A1Universite Mohammed VI Polytechnique
- Method of recycling silicon components3 Sep 2026US 2026/0257925 A1Flaxtec GmbH
- Tungsten powder manufacturing method, and tungsten carbide product manufacturing method20 Aug 2026US 2026/0241454 A1KYOCERA Corporation
Most cited
By later US patents
- Process for removal of silica from geothermal brine72US 4,016,075 ASouthern Pacific Land Co. · 1977
- Process for recovering molybdenum, vanadium, cobalt and nickel from roasted products of used catalysts from hydrotreatment desulfurization of petroleum48US 4,145,397 AFuji Fine Chemical Co. Ltd. · 1979
- Treatment of copper sulfide concentrates46US 5,176,802 A1993
- Recovery of alkali values from trona deposits38US 4,344,650 AFMC Corporation · 1982
- Enhanced leaching of minerals which form product layers34US 4,343,773 AUniversity of Utah Research Foundation · 1982