ALL-SOLID-STATE BATTERY PATENT

ChangeBridge: EPO Bulletin - Batteries (H01M)

Published March 25th, 2026

Detected April 1st, 2026

Summary

The European Patent Office published patent application EP4489170A1 for TDK Corporation covering all-solid-state battery technology. The patent, published March 25, 2026, includes claims related to solid electrolyte materials (H01M10/0562), electrode compositions, and battery cell structures. Designated states cover all European Patent Convention member states.

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What changed

The EPO published TDK Corporation's patent application EP4489170A1 for an all-solid-state battery. The patent covers solid electrolyte compositions classified under H01M10/0562, electrode materials including H01M4/134 and H01M4/38, and current collector components. Inventors include Sato Hiroshi, Suzuki Shota, Oyaake Hisaji, and Muroi Masayuki.

Technology companies and manufacturers in the battery and energy storage sectors should review this patent for freedom-to-operate analysis. The designated states cover all EPC contracting states including DE, FR, GB, IT, ES, NL, and other European jurisdictions. This publication does not create immediate compliance obligations but may affect product development strategies in the solid-state battery space.

Source document (simplified)

← EPO Patent Bulletin

ALL-SOLID-STATE BATTERY

Publication EP4489170A1 Kind: A1 Mar 25, 2026

Applicants

TDK Corporation

Inventors

SATO, Hiroshi, SUZUKI, Shota, OYAKE, Hisaji, MUROI, Masayuki

IPC Classifications

H01M 10/0562 20100101AFI20260217BHEP H01B 1/08 20060101ALI20260217BHEP H01M 4/134 20100101ALI20260217BHEP H01M 4/38 20060101ALI20260217BHEP H01M 4/525 20100101ALI20260217BHEP H01M 4/66 20060101ALI20260217BHEP H01M 10/052 20100101ALI20260217BHEP

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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