C22B 3/406
At least one compound thereof being a heterocyclic compound
Official title: {at least one compound thereof being a heterocyclic compound}
C22B3/406 (At least one compound thereof being a heterocyclic compound) appears on 24 US grants and 7 published applications in this corpus.
Search patents in C22B- Granted patents
- 24
- Published applications
- 7
- Assignees
- 24
- Inventors
- 75
- Latest grant
- 14 Nov 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 4 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 2 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 2 | 2 |
| 2023 | 1 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 3 |
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.
- 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 recovering a metal from an aqueous solution comprising a mixture of metal chlorides23 Mar 1993US 5,196,095 AHenkel Corporation
- Process for recovering gallium from basic aqueous sodium aluminate solutions by means of liquid-liquid extraction12 Sep 1989US 4,865,824 AHoechst Aktiengesellschaft
- 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
- Lithium extraction agent for lithium precipitation mother liquor and extraction method thereof14 May 2026US 2026/0132483 A1Institute of Process Engineering, Chinese Academy of Sciences
- Gold recovery system and recovery method thereof from gold separation solution12 Mar 2026US 2026/0071297 A1Copper Branch Company of Yunnan Tin Company Lmited
- Methods for selective leaching and extraction of precious metals in organic solvents17 Nov 2022US 2022/0364201 A1Excir Works Corp.
- Methods for simultaneous leaching and extraction of precious metals27 Oct 2022US 2022/0340998 A1Excir Works Corp.
Most cited
By later US patents
- Process for liquid/liquid extraction of gallium31US 3,971,843 ARhone-Poulenc Industries · 1976
- Solvent extraction of metals from acidic solutions with quaternary ammonium salts of hydrogen ion exchange agents31US 4,058,585 AGeneral Mills Chemicals, Inc. · 1977
- Liquid/liquid extraction of gallium values from basic aqueous solutions thereof19US 4,241,029 ARhone-Poulenc Industries · 1980
- Cyclic process using A.C. for selective recovery of metals from materials containing same16US 4,039,404 AKennecott Copper Corporation · 1977
- Compositions useful in process for extraction of metal values from acidic solutions13US 4,128,493 AGeneral Mills Chemicals, Inc. · 1978