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. 04, 2001
Filed:
Apr. 13, 2000
James C. Coderre, Lake Elmo, MN (US);
Dennis J. Chirhart, West St. Paul, MN (US);
John W. Frank, Cottage Grove, MN (US);
Stephen A. Johnson, Woodbury, MN (US);
Daniel J. McGurran, Woodbury, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
Retroreflective sheeting includes a transparent film, a pigmented layer having pigmented indicia thereon, and a retroreflective cube layer. The cube layer includes a number of cube corner elements bounded by at least two sets of intersecting grooves. A metallic film is disposed on at least some of the cube corner elements. The pigmented layer is interposed between the transparent film and the cube layer, and has pigmented indicia aligned with at least one of the sets of intersecting grooves.