Radiation-free Heating Pad with Faraday Cage
Summary
USPTO granted patent US12605538B2 to inventor Ying Wang on April 21, 2026, for a radiation-free heating pad. The invention uses a double shielding structure with aluminum foil and a flexible shielding layer to counteract electromagnetic fields based on the Faraday cage effect.
About this source
USPTO classification A61F covers implanted devices, wound dressings, prosthetics, stents, orthopedic implants, heart valves, and external support devices for the human body. Every patent grant in A61F lands in this feed, around 220 a month, with the patent number, title, applicant, inventor names, and abstract. Watch this if you compete in medical devices, file freedom-to-operate analyses, scout acquisition targets in surgical implants or wound care, or follow which academic medical centers are commercializing research through patent filings. Recent grants cover infant umbilical cord stump protectors, absorbable wound dressings, and in-situ assembly prosthetic pacing valves.
What changed
The patent covers a radiation-free heating pad comprising heating wires arranged in a serpentine pattern on a fiber layer, with aluminum foil wrapping the heating wire on both sides. A flexible shielding layer surrounds the aluminum foil, and a reinforcement layer forms the outer structure. The device leverages the Faraday cage effect to effectively counteract electromagnetic fields generated when electric current passes through the heating wires.
Manufacturers of heating pads and similar electrical wellness devices should be aware of this patent when developing new products, as it establishes intellectual property rights around radiation-blocking heating pad designs. The double shielding structure (aluminum foil + flexible shielding layer) represents the core claimed innovation for reducing electromagnetic radiation exposure.
Archived snapshot
Apr 21, 2026GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.
Radiation-free heating pad and processing technology thereof
Grant US12605538B2 Kind: B2 Apr 21, 2026
Inventors
Ying Wang
Abstract
A radiation-free heating pad and a processing technology thereof is provided. The radiation-free heating pad includes heating wires, a fiber layer, a flexible shielding layer, and a reinforcement layer. The heating wires are uniformly arranged on the fiber layer in a serpentine pattern, a layer of aluminum foil is arranged on each of an upper side and a lower side of the fiber layer, and the aluminum foil tightly wraps the heating wire. The flexible shielding layer is arranged outside the aluminum foil, and the reinforcement layer is arranged outside the flexible shielding layer. The radiation-free heating pad is based on the Faraday cage effect, and an electromagnetic field generated when an electric current passes through the heating wire can be effectively counteracted by a double shielding structure composed of the aluminum foil and the flexible shielding layer.
CPC Classifications
A61F 7/007 A61F 2007/0071 A61N 1/16
Filing Date
2025-09-09
Application No.
19324082
Claims
5
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