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:
Apr. 13, 2021
Filed:
Jul. 06, 2016
Keiwa Inc., Tokyo, JP;
Motohiko Okabe, Tokyo, JP;
Keiwa Inc., Tokyo, JP;
Abstract
A laminate sheet includes an intermediate layer, a first matte layer laminated on a front face side of the intermediate layer, and a second matte layer laminated on a back face side of the intermediate layer. A ratio of a gloss at 60° of a back face of the second matte layer to a gloss at 60° of a front face of the first matte layer is no less than 3/2 and no greater than 10. The gloss at 60° of the front face of the first matte layer is preferably no less than 5 and no greater than 20. The gloss at 60° of the back face of the second matte layer is preferably no less than 30 and no greater than 80. An arithmetic average roughness of the front face of the first matte layer is preferably no less than 0.5 μm and no greater than 1 μm.