C22B 23/043
Sulfurated acids or salts thereof
Official title: {Sulfurated acids or salts thereof}
C22B23/043 (Sulfurated acids or salts thereof) appears on 273 US grants and 392 published applications in this corpus.
Search patents in C22B- Granted patents
- 273
- Published applications
- 392
- Assignees
- 194
- Inventors
- 829
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 4 | 0 |
| 1978 | 7 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 4 | 0 |
| 1982 | 4 | 0 |
| 1983 | 7 | 0 |
| 1984 | 5 | 0 |
| 1985 | 4 | 0 |
| 1986 | 5 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 5 | 0 |
| 2000 | 5 | 0 |
| 2001 | 6 | 1 |
| 2002 | 8 | 4 |
| 2003 | 2 | 2 |
| 2004 | 3 | 4 |
| 2005 | 2 | 4 |
| 2006 | 2 | 4 |
| 2007 | 0 | 4 |
| 2008 | 3 | 11 |
| 2009 | 5 | 4 |
| 2010 | 3 | 11 |
| 2011 | 6 | 12 |
| 2012 | 7 | 2 |
| 2013 | 8 | 5 |
| 2014 | 3 | 7 |
| 2015 | 6 | 19 |
| 2016 | 7 | 12 |
| 2017 | 11 | 4 |
| 2018 | 10 | 11 |
| 2019 | 7 | 4 |
| 2020 | 8 | 13 |
| 2021 | 3 | 13 |
| 2022 | 6 | 18 |
| 2023 | 9 | 43 |
| 2024 | 26 | 56 |
| 2025 | 35 | 69 |
| 2026 | 17 | 55 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Integration of carbon sequestration with selective hydrometallurgical recovery of metal values22 Sep 2026US 12,742,226 B2Negative Emissions Materials, 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
- Methods for preparing cathode active material precursor material and cathode active material for lithium secondary battery, and cathode active material for lithium secondary battery prepared according to same14 Jul 2026US 12,683,207 B2Dongwoo Fine-Chem Co., Ltd.
- Production method for cobalt sulfate26 May 2026US 12,637,361 B2Sumitomo Metal Mining Co., Ltd.
- Leaching method for sulfide minerals3 Sep 2026US 2026/0258525 A1Guangxi Cngr New Energy Science & Technology Co., Ltd
- Method of management of fly ashes from the combustion of petroleum products27 Aug 2026US 2026/0250488 A1RE-Solve Sp. z.o.o.
- High-pressure reactor27 Aug 2026US 2026/0250800 A1Gem Co., Ltd.
- Method for extracting nickel-cobalt-manganese from laterite nickel ore by acid leaching27 Aug 2026US 2026/0250801 A1Gem Co., Ltd.
- Green method for hydrometallurgical production of nickel-cobalt-manganese new energy raw material from laterite nickel ore20 Aug 2026US 2026/0242242 A1Gem Co., Ltd.
Most cited
By later US patents
- Chloride assisted hydrometallurgical copper extraction52US 5,431,788 ACominco Engineering Services Ltd. · 1995
- Chloride assisted hydrometallurgical extraction of metal42US 5,902,474 ACominco Engineering Services Ltd. · 1999
- Autoclave oxidation leaching of sulfide materials containing copper, nickel and/or cobalt35US 4,304,644 AThe International Nickel Company, Inc. · 1981
- Chloride assisted hydrometallurgical extraction of metal34US 5,869,012 ACominco Engineering Services Ltd. · 1999
- High temperature neutralization of laterite leach slurry33US 3,991,159 AAmax Inc. · 1976