1888PressRelease - Radiation Shield Technologies (RST) Offering Multi-hazard Protection In The United States Receives Another US Patent.Radiation Shield Technologies (RST) continues to patent life-saving technology in both domestic and non-domestic legal systems for its anti-nuclear protective garments. Protected by 14 national and international patents, the garments are made with Demron, the only polymeric nano metal fabric to offer true anti-nuclear radiation protection.