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:
Nov. 20, 2001
Filed:
Apr. 13, 2000
Nippon Carbide Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
The triangular-pyramidal cube-corner retroreflective sheeting is constituted so that a pair of triangular-pyramidal cube-corner retroreflective elements partitioned by three lateral faces (faces a,, b,, and c,; faces a,, b,, and c,; . . . ) almost perpendicularly intersecting each other because V-shaped grooves having substantially-symmetric cross sections intersect each other are arranged in a closest-packed state so as to protrude to one side on a common bottom plane (S-S′), opposite faces (faces c,and c,) of this pair of triangular-pyramidal retroreflective elements share a base (x), the bottom plane (S-S′) is a common plane including bases (z and z) of one-side lateral faces (faces a,and a,) and bases (y and y) of the other-side lateral faces (faces b,and b,) of this pair of triangular-pyramidal retroreflective elements, this pair of triangular-pyramidal retroreflective elements have faced lateral faces (faces c,and c,) having shapes different from each other, and heights from the bottom plane (S-S′) up to apexes of the elements are different from each other.