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Method for Recovering Valuable Metal

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Published March 25th, 2026
Detected April 1st, 2026
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Summary

The European Patent Office published patent application EP4180135A1 by Sumitomo Metal Mining Co., Ltd. for a method of recovering valuable metals from waste materials and spent batteries. The invention covers hydrometallurgical and pyrometallurgical processes for extracting metals including nickel, copper, and cobalt from end-of-life products. The patent application is designated for all EU member states plus Switzerland, Norway, and other European Patent Convention states.

What changed

Sumitomo Metal Mining Co., Ltd. received publication of European patent application EP4180135A1 for a method of recovering valuable metals. The patent covers processes for extracting metals from waste materials using techniques classified under IPC codes C22B (non-ferrous metals), B09B (waste disposal), and H01M 10/54 (battery recycling). The designated contracting states include all major EU economies (DE, FR, GB, IT, ES, NL, BE, PL, SE, etc.) plus Switzerland, Norway, and Turkey.

This is a patent publication rather than a regulatory requirement, so no immediate compliance actions are required. Companies operating in battery recycling, e-waste processing, or metal recovery sectors should review the patent claims to assess potential freedom-to-operate implications for their existing or planned recovery processes. Businesses developing similar technologies should conduct patent landscape analyses to identify potential infringement risks.

Source document (simplified)

← EPO Patent Bulletin

METHOD FOR RECOVERING VALUABLE METAL

Publication EP4180135A1 Kind: A1 Mar 25, 2026

Applicants

SUMITOMO METAL MINING CO., LTD.

Inventors

YAMASHITA, Yu, NAGAKURA, Toshihiko, HAGIO, Tomoya

IPC Classifications

C22B 7/00 20060101AFI20240801BHEP C22B 15/00 20060101ALI20240801BHEP C22B 23/02 20060101ALI20240801BHEP B09B 3/40 20220101ALI20240801BHEP B09B 3/70 20220101ALI20240801BHEP H01M 10/54 20060101ALI20240801BHEP C22B 1/02 20060101ALI20240801BHEP C22B 5/10 20060101ALI20240801BHEP C22B 5/12 20060101ALI20240801BHEP

Designated States

AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LI, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR

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Source

Analysis generated by AI. Source diff and links are from the original.

Classification

Agency
EPO
Published
March 25th, 2026
Instrument
Notice
Legal weight
Non-binding
Stage
Final
Change scope
Minor
Document ID
EP4180135A1

Who this affects

Applies to
Environmental groups Manufacturers Energy companies
Industry sector
3241 Chemical Manufacturing 2120 Mining
Activity scope
Patent Filing
Geographic scope
European Union EU

Taxonomy

Primary area
Environmental Protection
Operational domain
Legal
Topics
Waste Management Manufacturing Energy

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