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. 14, 2020
Filed:
Apr. 02, 2015
Lintec Corporation, Itabashi-ku, JP;
Kazue Uemura, Tsukubamirai, JP;
Takamasa Kase, Koshigaya, JP;
Yumiko Amino, Funabashi, JP;
Kiichiro Kato, Saitama, JP;
Shigeru Saito, Ina-machi, JP;
LINTEC CORPORATION, Itabashi-ku, JP;
Abstract
A pressure sensitive adhesive sheet, containing a resin layer provided on a substrate or a release material. The resin layer includes a resin part (X) containing as a main component a hydrocarbon resin, and a particle part (Y) consisting of fine particles containing silica particles. At least a surface (α) of the resin layer opposite to the side of the substrate or the release material has pressure sensitive adhesiveness. The resin layer contains a multilayer structure having a layer (Xα) and a layer (Y) in this order in the thickness direction from the side of the surface (α). An intensity ratio in the layer (Xα) is less than 0.10, and an intensity ratio in the layer (Y) is 0.10 or more. The surface (α) has concave portions of irregular shapes.