C22B 30/04
Obtaining arsenic
Official title: Obtaining arsenic {(extraction of metal compounds by leaching in organic solutions C22B3/16; treatment or purification of solutions by adsorption on solids C22B3/24, by liquid-liquid extraction C22B3/26, by ion-exchange extraction C22B3/42)}
C22B30/04 (Obtaining arsenic) appears on 77 US grants and 53 published applications in this corpus.
Search patents in C22B- Granted patents
- 77
- Published applications
- 53
- Assignees
- 71
- Inventors
- 226
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 5 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 4 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 2 |
| 2005 | 0 | 1 |
| 2006 | 3 | 2 |
| 2007 | 0 | 1 |
| 2008 | 1 | 1 |
| 2009 | 3 | 2 |
| 2010 | 1 | 7 |
| 2011 | 0 | 2 |
| 2012 | 5 | 2 |
| 2013 | 3 | 2 |
| 2014 | 2 | 3 |
| 2015 | 1 | 3 |
| 2016 | 1 | 3 |
| 2017 | 2 | 2 |
| 2018 | 3 | 7 |
| 2019 | 3 | 3 |
| 2020 | 2 | 1 |
| 2021 | 5 | 0 |
| 2022 | 1 | 1 |
| 2023 | 1 | 2 |
| 2024 | 1 | 4 |
| 2025 | 1 | 0 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Real-time monitoring system and method for copper-arsenic sulfidation separation in copper electrolyte purification process19 May 2026US 12,630,899 B2Tongji University
- Peptide and method for using same20 May 2025US 12,303,916 B2JX Advanced Metals Corporation
- Pyro-metallurgical process in a rotary kiln25 Jun 2024US 12,018,345 B2S. A. Lhoist Recherche et Developpement
- Integrated pressure oxidative leach of copper sulphidic feed with copper heap leach21 Feb 2023US 11,584,975 B1Sherritt International Corporation
- Peptide binding to arsenic-containing mineral and use thereof22 Feb 2022US 11,254,707 B2JX Nippon Mining & Metals Corporation
- Methods of extracting metals by electrochemical processing of a sulfoarsenide compound21 May 2026US 2026/0139400 A1Battelle Energy Alliance, LLC
- Real-time monitoring system and method for copper-arsenic sulfidation separation in copper electrolyte purification process26 Feb 2026US 2026/0055482 A1Tongji University
- Method for preparing high-purity metallic arsenic from arsenic-containing solid waste through short flow process10 Oct 2024US 2024/0336993 A1Central South University
- Recovery method for valuable metals in copper anode slime29 Aug 2024US 2024/0287644 A1Kunming University of Science and Technology
- Purification apparatus and purification method for non-metal semiconductor material11 Jul 2024US 2024/0228286 A1
Most cited
By later US patents
- Removal of arsenic from aqueous solutions29US 4,366,128 ASherritt Gordon Mines Limited · 1982
- Procedure for separating arsenic from waste material24US 5,114,592 AWalhalla-Kalk, Entwichlungs- und Vertriebsgesellschaft mbH · 1992
- Process for recovering metal values from materials containing arsenic17US 4,244,734 AHazen Research, Inc. · 1981
- Recovery of group III element component from group III-V waste materials17US 6,126,719 AUniversity of Dayton · 2000
- Method of removal of arsenic from a sulfuric acid solution14US 4,241,039 ADowa Mining Co., Ltd. · 1980