United States
US 12,697,834 B2
Method of applying a pattern, and security device for an article
US 12,697,834 B2 is a granted patent from the United States Patent and Trademark Office (USPTO), dated 2026-08-04. Applicant: E INK CORPORATION. Its PDF downloads from this page without an account, up to 5 a day.
- Applicant
- E INK CORPORATION
- Inventors
- Graham TRIGGS-RAMM; Peiman HOSSEINI
- Publication date
- 2026-08-04
- Filing date
- 2022-11-28
- Document type
- B2 Granted patent
- Also written as
- US 12,697,834 B2 · US12697834 · 12697834
Abstract
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).…
The opening of the abstract. The full text is in the PDF.
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Patent office website: United States Patent and Trademark Office (USPTO)
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