The Presidential Security Service (PSS) obtained a patent from the United States Patent and Trademark Office (USPTO) for its self-developed artificial intelligence (AI)-based X-ray hazardous materials detection technology, the PSS announced Sunday. The PSS expects the U.S. patent to accelerate research and development efforts aimed at deploying the technology in the field. The PSS said it sought U.S. patent registration to secure international intellectual property rights for its X-ray method of detecting hazardous substances, including strong chemicals such as sulfuric acid and explosive devices, as well as for the AI algorithms and implementation technologies designed to automate the detection process. After about three years of rigorous review, the USPTO granted approval in December 2025, with final registration completed in January, the security agency said. The PSS has been working to develop a system in which an AI model automatically determines whether screened items contain dangerous substances when scanned by X-ray equipment. Pretrained on some 600,000 types of hazardous materi