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. 15, 2023
Filed:
Dec. 27, 2018
3m Innovative Properties Company, St. Paul, MN (US);
David J. Lamb, Oakdale, MN (US);
Guanglei Du, Painted Post, NY (US);
Scotty A. Kopp, Oakdale, MN (US);
Suman K. Patel, Woodbury, MN (US);
John A. Wheatley, Stillwater, MN (US);
3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US);
Abstract
A retroreflective article including a retroreflective layer including a structured surface that is opposite a major surface, a pressure sensitive adhesive that contacts at least a portion of the structured surface to form an optically inactive area that does not substantially retroreflect incident light and at least one low refractive index layer forming an optically active area that retroreflects incident light, wherein the optically active area comprises about 25% or less of the structured surface.