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Luminescent borates, materials and articles incorporating such borates, and methods and apparatus for their production and use in article authentication
US8993101B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8993101-B2 |
| Application number | US-201213672136-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 8, 2012 |
| Priority date | Nov 15, 2011 |
| Publication date | Mar 31, 2015 |
| Grant date | Mar 31, 2015 |
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Abstract
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Embodiments include luminescent materials and associated production methods. The material includes a crystal borate having a first substitutable element and a second substitutable element, one or more rare earth ions substituted for the first substitutable element, and chromium substituted for the second substitutable element. The one or more rare earth ions are selected from a group consisting of neodymium and ytterbium. The material also may include a medium within which particles of the borate are incorporated. The medium, with the luminescent material particles, may form a security feature of an article. Embodiments of methods for identifying whether such a luminescent material is incorporated with an article include exposing a portion of the article to excitation in a chromium absorption band, and determining whether a detected emission produced by the article as a result of the excitation indicates an ytterbium emission after termination of the exposing step.
First claim
Opening claim text (preview).
What is claimed is: 1. A luminescent material comprising: a luminescent borate formed from a borate having a crystal structure and including a first substitutable element and a second substitutable element; wherein the luminescent borate comprises one or more rare earth ions substituted for the first substitutable element, wherein the one or more rare earth ions are selected from a group consisting of neodymium and ytterbium; and wherein the luminescent borate further comprise…
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Cross-Sectional Technologies · mapped topic
- C09K11/7712Primary
Chemistry & Metallurgy · mapped topic
Operations & Transport · mapped topic
Operations & Transport · mapped topic
Cross-Sectional Technologies · mapped topic
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Frequently asked questions
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- What does patent US8993101B2 cover?
- Embodiments include luminescent materials and associated production methods. The material includes a crystal borate having a first substitutable element and a second substitutable element, one or more rare earth ions substituted for the first substitutable element, and chromium substituted for the second substitutable element. The one or more rare earth ions are selected from a group consisting…
- Who is the assignee on this patent?
- Honeywell Int Inc
- What technology area does this patent fall under?
- Primary CPC classification C09K11/7712. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 31 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).