EPO Patent Application EP4604191A1: Negative Active Particle and Preparation Method

ChangeBridge: EPO Bulletin - Batteries (H01M)

Published March 18th, 2026

Detected March 24th, 2026

Summary

The European Patent Office has published patent application EP4604191A1 concerning a negative active particle and its preparation method for batteries. The application was filed by Hithium Tech HK Limited and lists Zheng Jianming et al. as inventors. The publication date is March 18, 2026.

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What changed

This document is a publication of a European patent application (EP4604191A1) related to a negative active particle and its preparation method for use in batteries, as well as a negative sheet and a cell incorporating such a particle. The application was filed by Hithium Tech HK Limited and lists several inventors. The publication date is March 18, 2026.

As this is a patent publication, it does not impose direct regulatory obligations or compliance deadlines on manufacturers. However, it may inform R&D strategies and intellectual property considerations for companies operating in the battery manufacturing sector, particularly those involved in materials science and energy storage technologies.

Source document (simplified)

← EPO Patent Bulletin

NEGATIVE ACTIVE PARTICLE AND PREPARATION METHOD THEREFOR, NEGATIVE SHEET, AND CELL

Publication EP4604191A1 Kind: A1 Mar 18, 2026

Applicants

Hithium Tech HK Limited

Inventors

ZHENG, Jianming, PENG, Fuxi, HE, Chen, HUANG, Weimin, ZHANG, Qin

IPC Classifications

H01M 4/04 20060101AFI20250711BHEP H01M 4/133 20100101ALI20250711BHEP H01M 4/1393 20100101ALI20250711BHEP H01M 4/587 20100101ALI20250711BHEP H01M 10/0525 20100101ALI20250711BHEP H01M 4/02 20060101ALN20250711BHEP H01M 4/38 20060101ALN20250711BHEP

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, ME, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR

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