C22B 3/34
Containing sulfur
Official title: containing sulfur {, e.g. sulfonium}
C22B3/34 (Containing sulfur) appears on 60 US grants and 19 published applications in this corpus.
Search patents in C22B- Granted patents
- 60
- Published applications
- 19
- Assignees
- 53
- Inventors
- 143
- Latest grant
- 14 Nov 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 6 | 0 |
| 1980 | 6 | 0 |
| 1981 | 5 | 0 |
| 1982 | 2 | 0 |
| 1983 | 6 | 0 |
| 1984 | 1 | 0 |
| 1985 | 4 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 2 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 1 |
| 2015 | 1 | 0 |
| 2016 | 1 | 1 |
| 2017 | 0 | 0 |
| 2018 | 1 | 2 |
| 2019 | 0 | 1 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 2 | 3 |
| 2023 | 2 | 0 |
| 2024 | 0 | 1 |
| 2025 | 0 | 2 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Methods for simultaneous leaching and extraction of precious metals14 Nov 2023US 11,814,698 B2Excir Works Corp.
- Process for recovering metal from electronic waste21 Mar 2023US 11,608,544 B2Mint Innovation Limited
- Methods for simultaneous leaching and extraction of precious metals30 Aug 2022US 11,427,886 B2Excir Works Corp.
- Methods for selective leaching and extraction of precious metals in organic solvents9 Aug 2022US 11,408,053 B2Excir Works Corp.
- Process for efficiently enriching and recovering noble metals of platinum and palladium by solvent extraction1 May 2018US 9,957,587 B2Beijing University of Technology
- Pincer-type diphenyl sulfide compound, and preparation method and use thereof1 Oct 2026US 2026/0297025 A1Hunan Institute of Science and Technology
- Process for extracting tantalum and niobium from an aqueous acidic solution8 Jan 2026US 2026/0009106 A1Centre National De La Recherche Scientifique
- Separation recovery method of metal ions and acidic metal extractant19 Jun 2025US 2025/0201957 A1FUJIFILM Corporation
- Extraction column for metal separation in acid leaching solution of laterite nickel ore and extraction process thereof2 Jan 2025US 2025/0003024 A1Institute of Process Engineering, Chinese Academy of Sciences
- Method and extraction device for extracting and preparing battery-grade lithium carbonate from p507 raffinate18 Jan 2024US 2024/0018623 A1Hunan Jin Yuan New Materials Joint Stock Company Limited
Most cited
By later US patents
- Removal of heavy metals from waste water61US 4,731,187 AMiyoshi Yushi Kabushiki Kaisha · 1988
- Microencapsulated chelating agents and their use in removing metal ions from aqueous solutions43US 4,500,494 AStauffer Chemical Company · 1985
- Removal of complexed heavy metals from waste effluents41US 4,332,687 APCA International, Inc. · 1982
- Liquid-liquid extraction process for the recovery of tungsten from low level sources25US 4,279,870 AGTE Laboratories Incorporated · 1981
- Process for the extraction of precious metals from solutions thereof25US 4,390,366 AInco Limited · 1983