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. 21, 2002
Filed:
Oct. 23, 2000
Ikuo Mimura, Uozu, JP;
Keiji Adachi, Sano, JP;
Nippon Carbide Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A triangular-pyramidal cube-corner retroreflective sheeting characterized in that a lateral face (prism face) (face c) using a base edge (x) of triangular-pyramidal reflective elements faced each other and arranged in the closest-packed state by sharing the base edge (x) on a base plane (X-X′) as one side is hexagonal or triangular, two other faces (faces a and b) sharing one ridge line starting with an apex (H) of the triangular-pyramidal reflective elements is quadrangular and when assuming the height from the apex (H) up to the base plane (X-X′) as (h) and the height up to a substantially horizontal plane (Z-Z′) including base edges (z and w) of other two faces (faces a and b) as (h ), and the angle formed between the optical axis of the triangular-pyramidal reflective elements and a plane (Y-Y′) including the base edge (x) and vertical to the base plane (X-X′) as (&thgr;), h and h are not substantially equal to each other but h/h and &thgr; meet a specific relational expression.