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. 21, 2018
Filed:
Apr. 30, 2015
3m Innovative Properties Company, St. Paul, MN (US);
Michael A. McCoy, St. Paul, MN (US);
Daniel J. Schmidt, Woodbury, MN (US);
Shri Niwas, Maple Grove, MN (US);
Ying Xia, Woodbury, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
An exposed lens retroreflective article (), transfer articles comprising same, and methods of making same. The retroreflective article can include a binder layer (); a layer of transparent microspheres () partially embedded in the binder layer; and reflective layer () disposed between the binder layer and the microspheres. The reflective layer () can include a dielectric mirror, which can include a first stack () and a second stack () positioned in planar contact with the first stack, wherein each of the first stack and the second stack comprises at least one bilayer (), wherein each bilayer comprises a first material with a first bonding group and a second material with a complementary second bonding group. The transfer article can include the retroreflective article and a carrier web. The method can include partially embedding transparent microspheres in a carrier web; applying the reflective layer to the microspheres, and applying a binder layer composition to the reflective layer.