Prismatic retroreflective sheeting including infrared absorbing material
US-2018364403-A1 · Dec 20, 2018 · US
Irradiation marking of retroreflective sheeting
US10509148B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10509148-B2 |
| Application number | US-201816110834-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 23, 2018 |
| Priority date | Nov 12, 2009 |
| Publication date | Dec 17, 2019 |
| Grant date | Dec 17, 2019 |
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- Title
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Abstract
Official abstract text for this publication.
A method of marking prismatic retroreflective sheeting includes providing prismatic retroreflective sheeting having a front side and a back side, the back side having prismatic features and directing a radiation source at the back side of the prismatic retroreflective sheeting and irradiating a plurality of the prismatic features. The radiation forms a mark in the prismatic retroreflective sheeting.
First claim
Opening claim text (preview).
What is claimed is: 1. A prismatic retroreflective sheeting comprising: a front side; and a back side including a first set of cube corner elements having a first property, and a second set of the cube corner elements have a second property, different from the first property; wherein the first set of cube corner elements form a normally nearly invisible mark that can be seen when viewed with coaxial illumination. 2. The prismatic retroreflective sheeting of claim 1 , wherein the first property and the second property are one of dihedral angle, sharpness of cube vertices, and roughness. 3. The prismatic retroreflective sheeting of claim 1 , wherein the mark is selected from a group consisting essentially of a shape, figure, symbol, design, letter, number, alphanumeric character, and indicia. 4. The prismatic retroreflective sheeting of claim 1 , further comprising one of a seal film or reflective coating adjacent the cube corner elements. 5. An article comprising the prismatic retroreflective sheeting of claim 1 . 6. The article of claim 5 , wherein the article is one of a license plate or a signage.
Assignees
Inventors
Classifications
- G02B5/124Primary
plural reflecting elements forming part of a unitary plate or sheet · CPC title
Signs formed of or incorporating reflecting elements or surfaces, e.g. warning signs having triangular or other geometrical shape · CPC title
Registration, licensing, or like devices · CPC title
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Frequently asked questions
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- What does patent US10509148B2 cover?
- A method of marking prismatic retroreflective sheeting includes providing prismatic retroreflective sheeting having a front side and a back side, the back side having prismatic features and directing a radiation source at the back side of the prismatic retroreflective sheeting and irradiating a plurality of the prismatic features. The radiation forms a mark in the prismatic retroreflective shee…
- Who is the assignee on this patent?
- 3M Innovative Properties Co
- What technology area does this patent fall under?
- Primary CPC classification G02B5/124. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Dec 17 2019 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).