C22B 23/02
Obtaining nickel or cobalt: by dry processes
Official title: by dry processes
C22B23/02 (Obtaining nickel or cobalt: by dry processes) appears on 264 US grants and 255 published applications in this corpus.
Search patents in C22B- Granted patents
- 264
- Published applications
- 255
- Assignees
- 214
- Inventors
- 766
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 13 | 0 |
| 1977 | 9 | 0 |
| 1978 | 6 | 0 |
| 1979 | 4 | 0 |
| 1980 | 7 | 0 |
| 1981 | 3 | 0 |
| 1982 | 5 | 0 |
| 1983 | 8 | 0 |
| 1984 | 11 | 0 |
| 1985 | 6 | 0 |
| 1986 | 5 | 0 |
| 1987 | 6 | 0 |
| 1988 | 8 | 0 |
| 1989 | 6 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 4 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 7 | 2 |
| 2002 | 1 | 4 |
| 2003 | 4 | 0 |
| 2004 | 3 | 5 |
| 2005 | 1 | 5 |
| 2006 | 3 | 4 |
| 2007 | 2 | 3 |
| 2008 | 1 | 9 |
| 2009 | 7 | 14 |
| 2010 | 8 | 10 |
| 2011 | 7 | 13 |
| 2012 | 8 | 8 |
| 2013 | 10 | 11 |
| 2014 | 10 | 6 |
| 2015 | 7 | 4 |
| 2016 | 3 | 2 |
| 2017 | 5 | 11 |
| 2018 | 7 | 7 |
| 2019 | 8 | 7 |
| 2020 | 3 | 6 |
| 2021 | 2 | 4 |
| 2022 | 4 | 12 |
| 2023 | 7 | 28 |
| 2024 | 13 | 33 |
| 2025 | 11 | 29 |
| 2026 | 5 | 18 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Two-step thermal treatment of nickel-containing sulfides for the production of ferronickel22 Sep 2026US 12,741,314 B2The Governing Council of the University of Toronto
- Method for recovering valuable metal from used LIB11 Aug 2026US 12,703,893 B2Mitsubishi Materials Corporation
- Ore hydrometallurgical slag and phosphating slag7 Apr 2026US 12,595,532 B2Gem Co., Ltd.
- Method for recovering active metal of lithium secondary battery3 Feb 2026US 12,542,310 B2SK Innovation Co., Ltd.
- All-in-one nickel recovering method for recovery of nickel oxide from raw materials containing nickel6 Jan 2026US 12,516,398 B2Kemco
- Methods for reducing metal oxides with ammonia gas10 Sep 2026US 2026/0265846 A1Trustees of Tufts College
- Metal powder contaminant removal6 Aug 2026US 2026/0226583 A1
- A process for transition metal oxide reduction30 Jul 2026US 2026/0218323 A1Helios Project Ltd.
- High-temperature reduction device for waste battery recycling and heat treatment method for waste battery recycling16 Jul 2026US 2026/0199943 A1Posco
- Lithium recovery18 Jun 2026US 2026/0167512 A1Novalith Technologies Pty Limited
Most cited
By later US patents
- Cryoplasty device and method384US 5,868,735 ASciMed Life Systems, Inc. · 1999
- Cryoplasty device and method227US 6,290,696 B1SciMed Life Systems, Inc. · 2001
- Cryoplasty device and method182US 6,648,878 B2SciMed Life Systems, Inc. · 2003
- Cryoplasty device and method170US 7,022,120 B2SciMed Life Systems, Inc. · 2006
- Process for smelting nickel47US 4,466,828 AToyo Engineering Corporation · 1984