Patents
US 12612680 B2: Extraction of copper, gold and other elements from waste materials
- Granted
- 2026-04-28
- Filed
- 2021-02-08 application 17797692
- Type
- Utility · 11 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A method for recovering metals from waste materials includes steps of contacting a waste material feed stream with a first lixiviant adapted to leach copper and other base metals from the waste material feed stream and provide a treated waste material feed stream, recovering copper metal from the first lixiviant, contacting the treated waste material stream with a second lixiviant adapted to leach noble metals from the treated waste material feed stream and recovering gold from the second lixiviant.
Source: PTBLXML, file of 2026-04-28 (ipgb20260428.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| University of Kentucky Research Foundation 446 patents | US company or organization | Lexington, KY | UNIVERSITY OF KENTUCKY RESEARCH FOUNDATION Nonprofit EXACT high confidence: identical full name and state | PTBLXML, file of 2026-04-28 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Joshua M Werner | Lexington, KY | PTBLXML, file of 2026-04-28 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| C22B | Production and refining of metals ; pretreatment of raw materials | C22B11/042 | PTBLXML, file of 2026-04-28 |
| C25C | Processes for the electrolytic production, recovery or refining of metals; apparatus therefor | C25C1/12 | PTBLXML, file of 2026-04-28 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2023-04-12 | Assignment Assignment of assignor's interest | WERNER, JOSHUA M signed 2023-04-03 | UNIVERSITY OF KENTUCKY RESEARCH FOUNDATION LEXINGTON, KY | 63307/879 | PASDL, file of 2026-10-15 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.