Lithium Ion Secondary Battery Positive Electrode Patent

ChangeBridge: EPO Bulletin - Batteries (H01M)

Published March 25th, 2026

Detected April 2nd, 2026

Summary

The European Patent Office published patent application EP4583185A1 for Vehicle Energy Japan Inc., covering a lithium ion secondary battery positive electrode and lithium ion secondary battery. The patent was filed by inventors INABA, Akira and MIKI, Takeshi, with IPC classifications covering electrode materials (H01M 4/131, H01M 4/525, H01M 4/62).

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What changed

The EPO published patent application EP4583185A1 for Vehicle Energy Japan Inc., a lithium ion secondary battery positive electrode and lithium ion secondary battery invention. The application names inventors INABA, Akira and MIKI, Takeshi, with IPC classifications H01M 4/131, H01M 4/525, and H01M 4/62 covering electrode materials and compositions. The patent is designated for all European extension states including DE, FR, GB, IT, ES, NL, and 28 other countries.

This is a standard patent publication with no compliance requirements or deadlines. Technology companies and manufacturers in the battery, electric vehicle, and energy storage sectors should review the technical claims for competitive intelligence, potential licensing discussions, or freedom-to-operate analysis. Patent professionals may add this publication to relevant monitoring portfolios.

Source document (simplified)

← EPO Patent Bulletin

LITHIUM ION SECONDARY BATTERY POSITIVE ELECTRODE AND LITHIUM ION SECONDARY BATTERY

Publication EP4583185A1 Kind: A1 Mar 25, 2026

Applicants

Vehicle Energy Japan Inc.

Inventors

INABA, Akira, MIKI, Takeshi

IPC Classifications

H01M 4/131 20100101AFI20260217BHEP H01M 4/525 20100101ALI20260217BHEP H01M 4/62 20060101ALI20260217BHEP

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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