C22B 3/41
Using a solution of normally solid organic compounds
Official title: {using a solution of normally solid organic compounds, e.g. dissolved polymers, sugars, or the like}
C22B3/41 (Using a solution of normally solid organic compounds) appears on 41 US grants and 25 published applications in this corpus.
Search patents in C22B- Granted patents
- 41
- Published applications
- 25
- Assignees
- 43
- Inventors
- 122
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 1 | 3 |
| 2008 | 1 | 0 |
| 2009 | 1 | 0 |
| 2010 | 1 | 5 |
| 2011 | 0 | 1 |
| 2012 | 4 | 1 |
| 2013 | 2 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 1 | 0 |
| 2019 | 0 | 1 |
| 2020 | 1 | 2 |
| 2021 | 0 | 3 |
| 2022 | 0 | 1 |
| 2023 | 2 | 1 |
| 2024 | 3 | 1 |
| 2025 | 1 | 1 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Method for recovering chromium contained in a bath for pickling metallic materials and facility for implementing same17 Feb 2026US 12,553,109 B2Aperam
- Hydrometallurgical solvent extraction methods5 Aug 2025US 12,378,633 B2Cytec Industries Inc.
- Controlling the rheology of a metal ore residue24 Dec 2024US 12,173,126 B2Coatex
- Controlling the rheology of a metal ore residue22 Oct 2024US 12,122,884 B2Coatex
- Use of lipophilic derivatives of aminopolycarboxylic acids for the extraction of rare earths from an acidic aqueous solution14 May 2026US 2026/0132482 A1Centre National De La Recherche Scientifique
- Extraction of critical minerals using polyanions12 Feb 2026US 2026/0043111 A1University of Kansas
- Vanadium oxide extraction from bayer process29 May 2025US 2025/0171328 A1Snf Group
- Lignin-based compositions and related heavy metal recovery methods6 Jun 2024US 2024/0183001 A1LignoSol IP Limited
- Method for extracting rare earth elements from rare earth element hyperaccumulator18 May 2023US 2023/0151456 A1Guangzhou Institute of Geochemistry, Chinese Academy of Sciences
Most cited
By later US patents
- Water-soluble polymers for recovery of metal ions from aqueous streams74US 5,766,478 AThe Regents of the University of California Office of Technology Transfer · 1998
- Process and composition for removal of metal ions from aqueous solutions45US 4,741,831 AThe Dow Chemical Company · 1988
- Process for the recovery of metal values29US 4,765,834 AUnion Carbide Corporation · 1988
- Polymers for metal extractions in carbon dioxide26US 6,176,895 B12001
- Recovery of heavy metals from aqueous solutions23US 4,619,744 APhillips Petroleum Company · 1986