C22B 3/18
Extraction of metal compounds from ores or concentrates by wet processes: with
Official title: with the aid of microorganisms or enzymes, e.g. bacteria or algae
C22B3/18 (Extraction of metal compounds from ores or concentrates by wet processes: with) appears on 334 US grants and 279 published applications in this corpus.
Search patents in C22B- Granted patents
- 334
- Published applications
- 279
- Assignees
- 240
- Inventors
- 753
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 4 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 8 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 4 | 0 |
| 1987 | 3 | 0 |
| 1988 | 15 | 0 |
| 1989 | 5 | 0 |
| 1990 | 8 | 0 |
| 1991 | 16 | 0 |
| 1992 | 8 | 0 |
| 1993 | 8 | 0 |
| 1994 | 15 | 0 |
| 1995 | 12 | 0 |
| 1996 | 5 | 0 |
| 1997 | 8 | 0 |
| 1998 | 10 | 0 |
| 1999 | 6 | 0 |
| 2000 | 11 | 0 |
| 2001 | 9 | 2 |
| 2002 | 11 | 7 |
| 2003 | 4 | 5 |
| 2004 | 9 | 11 |
| 2005 | 6 | 11 |
| 2006 | 6 | 4 |
| 2007 | 5 | 13 |
| 2008 | 7 | 13 |
| 2009 | 5 | 12 |
| 2010 | 7 | 6 |
| 2011 | 5 | 9 |
| 2012 | 7 | 7 |
| 2013 | 7 | 6 |
| 2014 | 8 | 3 |
| 2015 | 1 | 16 |
| 2016 | 5 | 11 |
| 2017 | 4 | 7 |
| 2018 | 7 | 7 |
| 2019 | 8 | 10 |
| 2020 | 12 | 20 |
| 2021 | 3 | 6 |
| 2022 | 7 | 10 |
| 2023 | 6 | 16 |
| 2024 | 7 | 30 |
| 2025 | 7 | 17 |
| 2026 | 9 | 20 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for recovering metal from metal element-containing substance1 Sep 2026US 12,723,291 B2IHI Corporation
- Materials and methods for increasing gold recovery from leachate solutions30 Jun 2026US 12,668,854 B2Locus Solutions Ipco, LLC
- Ecological release of elements and degradation of organics using heterotrophic microorganisms out of multiple carrier materials9 Jun 2026US 12,649,700 B2
- Process for extracting a metal of interest from a mineral substrate26 May 2026US 12,637,734 B2Cemvita Factory, Inc.
- Equipment and method for leaching copper, and method for producing electrolytic copper using said equipment and method28 Apr 2026US 12,612,677 B2JX Advanced Metals Corporation
- Process for recovering platinum-group metal from waste catalyst by using biocyanide and ionic liquid8 Oct 2026US 2026/0308713 A1Iucf-Hyu (Industry-University Cooperation Foundation Hanyang University)
- Method for recovering metals from waste battery using magnetic field applied biological leaching process10 Sep 2026US 2026/0265858 A1Ak Tree Co., Ltd.
- Binder compositions and methods of use20 Aug 2026US 2026/0242888 A1Locus Solutions Ipco, LLC
- Plant-based metal recovery platform20 Aug 2026US 2026/0242889 A1PIMIRS Technologies, LLC
- Heap Leaching a Material13 Aug 2026US 2026/0234752 A1Rio Tinto Technological Resources Inc.
Most cited
By later US patents
- Biooxidation process for recovery of gold from heaps of low-grade sulfidic and carbonaceous sulfidic ore materials78US 5,246,486 ANewmont Gold Company · 1993
- Microbial consortium treatment of refractory precious metal ores77US 5,127,942 ANewmont Mining Corporation · 1992
- Biological-acid leach process70US 4,571,387 ABritish Columbia Research Council · 1986
- Metal value recovery from metal sulfide containing ores66US 4,740,243 AEnsci, Inc. · 1988
- Thermophilic microbial treatment of precious metal ores63US 4,729,788 AAdvanced Mineral Technologies, Inc. · 1988