USPTO Patent Granted for Lead-Acid Battery Technology

ChangeBridge: Patent Grants - Batteries (H01M)

Published March 24th, 2026

Detected March 26th, 2026

Summary

The USPTO has granted a patent (US12586776B2) to GS Yuasa International Ltd. for lead-acid battery technology. The patent covers a specific composition for the negative electrode material, incorporating a nonionic surfactant to enhance battery performance.

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What changed

The United States Patent and Trademark Office (USPTO) has granted patent US12586776B2 for a lead-acid battery technology to GS Yuasa International Ltd. The patent specifically details a novel negative electrode material composition that includes a nonionic surfactant with at least one long-chain aliphatic hydrocarbon group (8+ carbon atoms) and a surfactant content of 8 ppm or more by mass. This innovation aims to improve the performance characteristics of lead-acid batteries.

This patent grant represents a new intellectual property asset for GS Yuasa International Ltd. For other manufacturers in the battery sector, this patent may influence future research and development directions, potentially requiring licensing agreements or alternative technological approaches to avoid infringement. Compliance officers in the manufacturing sector should note this as a development in battery technology intellectual property.

Source document (simplified)

← USPTO Patent Grants

Lead-acid battery

Grant US12586776B2 Kind: B2 Mar 24, 2026

Assignee

GS Yuasa International Ltd.

Inventors

Yusuke Kumagai

Abstract

A lead-acid battery includes at least one cell including an element and an electrolyte solution. The element includes a positive electrode plate, a negative electrode plate, and a separator interposed between the negative electrode plate and the positive electrode plate. The negative electrode plate includes a negative electrode material. The negative electrode material includes a nonionic surfactant including one or more hydrophobic groups and one or more hydrophilic groups. At least one of the hydrophobic groups is a long-chain aliphatic hydrocarbon group having 8 or more carbon atoms. A content of the nonionic surfactant in the negative electrode material is 8 ppm or more on a mass basis.