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:
Dec. 03, 2013
Filed:
Mar. 10, 2009
Kenneth L. Smith, White Bear Lake, MN (US);
Gerald M. Benson, Woodbury, MN (US);
Michele A. Craton, Cottage Grove, MN (US);
Michael P. Daniels, Inver Grove Heights, MN (US);
Roger E. Luehrs, Ely, MN (US);
Kenneth L. Smith, White Bear Lake, MN (US);
Gerald M. Benson, Woodbury, MN (US);
Michele A. Craton, Cottage Grove, MN (US);
Michael P. Daniels, Inver Grove Heights, MN (US);
Roger E. Luehrs, Ely, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
Retroreflective sheeting includes a body layer having a structured surface with recessed faces forming cube corner cavities. A reflective film is disposed at least on the recessed faces, and a fill material fills the cube corner cavities. The fill material comprises radiation-curable materials, adhesives, or both, and preferably transparent radiation-curable pressure-sensitive adhesives. The fill material preferably forms a continuous layer covering both the recessed faces and upper portions of the structured surface. A transparent cover layer preferably contacts the fill material layer.