{
  "patent_number": "US 12736728",
  "country": "US",
  "title": "How a Three-Layer Coating Creates Vivid Colors Without Dyes",
  "original_title": "Three-layered structural color multilayer structures",
  "summary": "This patent describes a special three-layer coating that creates bright, stable colors by reflecting light in a specific way, similar to how a butterfly's wings get their color, without using traditional dyes or pigments.",
  "what_it_does": "This patent details a multilayer structure designed to produce color by manipulating light, rather than using chemical pigments. It achieves this by precisely arranging three optical layers: a core layer, a conformal dielectric layer that completely covers the core, and a conformal absorber layer that completely covers the dielectric layer. The abstract specifies that the structure \"consists of three optical layers.\" When light hits this specific arrangement, it interferes in a way that reflects only certain colors, making the object appear that color. For example, coating a tiny particle with these layers could make it appear iridescent blue without any blue dye.",
  "what_it_does_not_cover": [
    "Does not cover colors created by chemical dyes, pigments, or inks.",
    "Does not cover structures that use more or fewer than three distinct optical layers.",
    "Does not cover colors produced primarily by light scattering, such as the blue of the sky.",
    "Does not cover structures where the dielectric or absorber layers are not 'conformal' to the layer beneath them, meaning they don't precisely follow the underlying shape."
  ],
  "filed": "2023-03-02",
  "granted": "2026-09-15",
  "expires": null,
  "status": "active",
  "holder": null,
  "holder_url": null,
  "inventors": [],
  "times_cited": 0,
  "tags": [
    "materials",
    "consumer_electronics",
    "semiconductors",
    "optics",
    "manufacturing"
  ],
  "abstract": "A multilayer structure that reflects color includes a core layer, and a conformal dielectric layer encapsulating the core layer. A conformal absorber layer encapsulates the conformal dielectric layer. The multilayer structure consists of three optical layers.",
  "url": "https://patentbrief.org/patent/us/12736728/three-layered-structural-color-multilayer-structures",
  "markdown_url": "https://patentbrief.org/patent/us/12736728/three-layered-structural-color-multilayer-structures/md",
  "google_patents_url": "https://patents.google.com/patent/US12736728",
  "relatedPatents": []
}