美國
US 12,697,834 B2
Method of applying a pattern, and security device for an article
US 12,697,834 B2 是美國專利商標局（USPTO）的核准專利，日期 2026-08-04。申請人：E INK CORPORATION。PDF 可在本頁下載，未登入每天最多 5 篇。
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- 申請人
- E INK CORPORATION
- 發明人
- Graham TRIGGS-RAMM; Peiman HOSSEINI
- 公開日
- 2026-08-04
- 申請日
- 2022-11-28
- 文件種類
- B2 核准公告
- 也寫作
- US 12,697,834 B2 · US12697834 · 12697834
摘要
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).…
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專利局網站： 美國專利商標局（USPTO）