C22B 1/02
Roasting processes
Official title: Roasting processes (C22B1/16 takes precedence)
C22B1/02 (Roasting processes) appears on 439 US grants and 554 published applications in this corpus.
Search patents in C22B- Granted patents
- 439
- Published applications
- 554
- Assignees
- 415
- Inventors
- 1,650
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 13 | 0 |
| 1978 | 13 | 0 |
| 1979 | 7 | 0 |
| 1980 | 10 | 0 |
| 1981 | 15 | 0 |
| 1982 | 5 | 0 |
| 1983 | 5 | 0 |
| 1984 | 8 | 0 |
| 1985 | 8 | 0 |
| 1986 | 7 | 0 |
| 1987 | 4 | 0 |
| 1988 | 3 | 0 |
| 1989 | 5 | 0 |
| 1990 | 3 | 0 |
| 1991 | 5 | 0 |
| 1992 | 4 | 0 |
| 1993 | 8 | 0 |
| 1994 | 3 | 0 |
| 1995 | 5 | 0 |
| 1996 | 1 | 0 |
| 1997 | 4 | 0 |
| 1998 | 7 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 5 | 0 |
| 2002 | 5 | 6 |
| 2003 | 6 | 4 |
| 2004 | 6 | 11 |
| 2005 | 5 | 9 |
| 2006 | 4 | 13 |
| 2007 | 4 | 9 |
| 2008 | 4 | 6 |
| 2009 | 8 | 14 |
| 2010 | 9 | 9 |
| 2011 | 10 | 8 |
| 2012 | 7 | 6 |
| 2013 | 4 | 19 |
| 2014 | 9 | 15 |
| 2015 | 21 | 18 |
| 2016 | 6 | 17 |
| 2017 | 9 | 10 |
| 2018 | 12 | 10 |
| 2019 | 10 | 13 |
| 2020 | 12 | 20 |
| 2021 | 8 | 27 |
| 2022 | 8 | 21 |
| 2023 | 22 | 57 |
| 2024 | 34 | 82 |
| 2025 | 30 | 84 |
| 2026 | 24 | 66 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Apparatus and process for thermal treatment of raw material containing lithium compounds and phosphorus compounds, method of recovering lithium and/or phosphorus from residue material of lithium-ion batteries15 Sep 2026US 12,735,764 B2MontanuniversitäT Leoben
- Method for recovering noble metals from catalytic converter15 Sep 2026US 12,735,768 B2National Ilan University
- Impurity control in lithium-ion battery recycling1 Sep 2026US 12,725,847 B2Bluegrass Infrastructure Partners Holdings, LLC
- Method for recycling iron ore tailing and use thereof25 Aug 2026US 12,716,113 B2Baotou Research Institute of Rare Earths
- Method for producing secondary battery material from black mass14 Jul 2026US 12,683,210 B2Kemco
- Hydrometallurgical Process for Recovering Palladium from a Spent Catalyst24 Sep 2026US 2026/0286463 A1Peroxidos Do Brasil Ltda
- Method of recovering lithium1915153724 Sep 2026US 2026/0290925 A1LG Energy Solution, Ltd.
- Recovery of li-salts from ores10 Sep 2026US 2026/0265071 A1Adionics
- 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 earth elements from rare earth permanent magnets by using deep eutectic solvent10 Sep 2026US 2026/0265868 A1Korea Institute of Geoscience and Mineral Resources
Most cited
By later US patents
- Vertical shaft melting furnace and method of melting65US 4,877,449 AInstitute of Gas Technology · 1989
- Method of and apparatus for carrying out an exothermic process60US 4,111,158 AMetallgesellschaft Aktiengesellschaft · 1978
- Process for treating metal-contaminated materials48US 5,556,447 APhysical Sciences, Inc. · 1996
- Processes for preparing lithium hydroxide48US 9,677,181 B2Nemaska Lithium Inc. · 2017
- Method for separating metal constituents from ocean floor nodules46US 4,042,664 ADeepsea Ventures, Inc. · 1977