The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 05, 2019
Filed:
Apr. 30, 2015
3m Innovative Properties Company, St. Paul, MN (US);
Shri Niwas, Maple Grove, MN (US);
Michael A. McCoy, Minneapolis, MN (US);
Ying Xia, Woodbury, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
Retroreflective articles include a layer of optical elements, the layer of optical elements being divided into at least a first segment () and second segment (), and a bead bond layer () containing a colorant. The optical elements are partially embedded in the bead bond layer. The optical elements include transparent microspheres (), a transparent polymeric layer (), and at least one reflective layer. In the first segment of optical elements, the reflective layer is a dielectric reflective layer (), and in the second segment of optical elements, the reflective layer is a reflective metallic layer (). The retroreflective articles have improved wash durability.