{"number":"US12697834B2","kindCode":"B2","documentType":"grant","title":{"original":"Method of applying a pattern, and security device for an article","english":"Method of applying a pattern, and security device for an article"},"abstract":{"original":"Methods of applying a pattern and security devices are disclosed. In one arrangement, a receiving member (10) having a layered structure (12) is provided. The layered structure (12) comprises a layer of phase change material (PCM, 2). The phase change material (PCM, 2) is thermally switchable between a plurality of stable states having different refractive indices relative to each other. An embossing member (5) is stamped into the receiving member (10).…","english":"Methods of applying a pattern and security devices are disclosed. In one arrangement, a receiving member (10) having a layered structure (12) is provided. The layered structure (12) comprises a layer of phase change material (PCM, 2). The phase change material (PCM, 2) is thermally switchable between a plurality of stable states having different refractive indices relative to each other. An embossing member (5) is stamped into the receiving member (10).…"},"applicants":["E INK CORPORATION"],"inventors":["Graham TRIGGS-RAMM","Peiman HOSSEINI"],"filingDate":"2022-11-28","publicationDate":"2026-08-04","grantDate":"2026-08-04","verifiedWithOffice":true,"pdfUrl":"https://downloadpatent.com/pdf/US12697834B2.pdf","pages":{"en":"https://downloadpatent.com/patent/US12697834B2","zh-Hant":"https://downloadpatent.com/zh-Hant/patent/US12697834B2","ja":"https://downloadpatent.com/ja/patent/US12697834B2"}}