Method of Producing Valuable Metal

ChangeBridge: EPO Bulletin - Batteries (H01M)

Published March 25th, 2026

Detected April 1st, 2026

Summary

The European Patent Office published patent application EP4357469A1 filed by Sumitomo Metal Mining Co., Ltd. of Japan. The patent covers methods for producing valuable metals, including recovery processes for battery materials indicated by IPC classification H01M 10/54. The application was published March 25, 2026, with designations covering all EU member states plus other EPC contracting states.

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What changed

The EPO published patent EP4357469A1 for a method of producing valuable metals, filed by Sumitomo Metal Mining Co., Ltd. The patent relates to metallurgy processes (IPC C22B classifications) with specific application to battery recycling as indicated by H01M 10/54. The patent designation covers all EU contracting states including Germany, France, UK, Italy, Spain, and 26 other states.

This is a patent publication notice with no compliance requirements or regulatory obligations. Entities interested in metal recovery or battery recycling technology may wish to review the patent claims to assess potential licensing needs or freedom-to-operate considerations. No action is required for regulatory compliance purposes.

Source document (simplified)

← EPO Patent Bulletin

METHOD OF PRODUCING VALUABLE METAL

Publication EP4357469A1 Kind: A1 Mar 25, 2026

Applicants

SUMITOMO METAL MINING CO., LTD.

Inventors

YAMASHITA, Yu

IPC Classifications

C22B 5/10 20060101AFI20250821BHEP C22B 7/00 20060101ALI20250821BHEP C22B 23/02 20060101ALI20250821BHEP C22B 9/16 20060101ALI20250821BHEP H01M 10/54 20060101ALI20250821BHEP

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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