Filter Inductor and On-Board Charger Patent Application

ChangeBridge: Patent Apps - Power Supply (H02J)

Published November 24th, 2025

Detected March 27th, 2026

Summary

The USPTO has published a new patent application, US20260088794A1, detailing a filter inductor and on-board charger. The application was filed on November 24, 2025, by inventors Haijun YANG and Shiwei LIU.

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What changed

This document is a publication of a new patent application (US20260088794A1) filed with the USPTO on November 24, 2025. The application describes a filter inductor with specific configurations of inner and outer magnetic cores and windings, intended for use in on-board chargers.

As this is a patent application, it does not impose direct regulatory obligations or compliance deadlines on businesses. However, companies involved in the design, manufacturing, or sale of power supplies, chargers, or related electronic components should be aware of this filing as it may impact future intellectual property landscapes and product development strategies.

Source document (simplified)

← USPTO Patent Applications

FILTER INDUCTOR AND ON-BOARD-CHARGER

Application US20260088794A1 Kind: A1 Mar 26, 2026

Inventors

Haijun YANG, Shiwei LIU

Abstract

A filter inductor, which includes: an outer magnetic core with a window, an inner magnetic core, and a winding. The inner magnetic core includes a first inner magnetic core and a second inner magnetic core which are located at least partially in the window. The winding includes a first winding, a second winding, a third winding and a fourth winding which are wound around the outer magnetic core at intervals. The first inner magnetic core and the second inner magnetic core are stacked. For the first inner magnetic core, a first end is located between the first winding and the second winding, and a second end is located between the third winding and the fourth winding. For the second inner magnetic core, a first end is located between the second winding and the third winding, and a second end is located between the fourth winding and the first winding.