Method for Recovering Valuable Metal
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)
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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