The record first. Granted August 23, 2022 on a 2021-priority filing, US11424639B2, "Wireless charging coil and electronic device including the same" (CPC H02J 50/10 and H01F 27/2804), assigned to Samsung Electronics. Named inventors include Juhyang Lee and Yusu Kim. The claim covers the coil geometry and how it sits in the device — the physical enabler of wireless charging.

Follow the segment line. Wireless charging is not just a convenience feature; it anchors an accessory ecosystem. Charging pads, certified cases, and aligned-coil mounts are high-margin accessories, and the standard a phone supports determines which accessories sell. Owning the coil IP lets the handset maker shape that ecosystem and capture more of its margin.

“According to embodiments, a wireless charging coil and an electronic device including the same are provided.”— U.S. Patent No. 11,424,639 source

The business framing is the accessory tax. Every certified accessory carries a margin the platform owner shares in, and proprietary or patent-fenced charging keeps third parties from undercutting that margin. The coil grant is a brick in the wall around the accessory revenue the handset enables.

Comparability discipline applies. "Wireless charging" spans inductive, resonant, and proprietary fast-wireless approaches with different accessory implications. The filing pins this claim to a specific coil design — useful for tracking which maker owns which charging approach, and a distinction the spec sheet flattens.

What the document does not disclose is the economics. It is a coil-and-device claim, not an accessory P&L. It will not tell you accessory attach, margin, or certification revenue. The grant establishes a defensible position; the accessory dollars are undisclosed.

For investors, the throughline is this: wireless charging is an accessory-ecosystem story, and the patent record shows which makers are fencing the margin that ecosystem generates.