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:
May. 07, 2019
Filed:
Jan. 27, 2015
Applicant:
3m Innovative Properties Company, St. Paul, MN (US);
Inventors:
Michael A. McCoy, Minneapolis, MN (US);
Shri Niwas, Maple Grove, MN (US);
Assignee:
3M Innovative Properties Company, St. Paul, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 5/22 (2006.01); A41D 27/08 (2006.01); B29D 11/00 (2006.01); G02B 5/128 (2006.01); B29K 105/16 (2006.01); B29K 505/14 (2006.01);
U.S. Cl.
CPC ...
G02B 5/128 (2013.01); A41D 27/085 (2013.01); B29D 11/00615 (2013.01); G02B 5/223 (2013.01); B29K 2105/16 (2013.01); B29K 2505/14 (2013.01); B29K 2901/12 (2013.01); B29K 2995/003 (2013.01);
Abstract
Retroreflective articles include a layer of optical elements (), embedded in a bead bond layer (). The optical elements include transparent microspheres (), at least one colored polymeric layer () covering the transparent microspheres, and a reflective layer () covering the colored polymeric layer. The polymeric layer includes at least one nanopigment. The transparent microspheres have a diameter range of 80-120 micrometers, with at least 75% of the transparent microspheres having a diameter range of 85-105 micrometers.