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:
Aug. 16, 2022
Filed:
Oct. 25, 2018
3m Innovative Properties Company, St. Paul, MN (US);
Michael A. McCoy, St. Paul, MN (US);
Ying Xia, Woodbury, MN (US);
Lok-Man Ng, Hsinchu, TW;
Shri Niwas, Maple Grove, MN (US);
Scott J. Jones, Woodbury, MN (US);
Kevin W. Gotrik, Hudson, WI (US);
Kui Chen-Ho, Woodbury, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
A retroreflective article including a reflective-particle-containing binder layer and a plurality of retroreflective elements. Each retroreflective element includes a transparent microsphere partially embedded in the binder layer. At least some of the retroreflective elements comprise a primary reflective layer that covers a portion of the embedded surface area of the transparent microsphere, and a secondary reflective layer provided by portions of the reflective-particle-containing binder layer that are adjacent to portions of the embedded surface area of the transparent microsphere that are not covered by the primary reflective layer.