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:
Oct. 10, 2023
Filed:
May. 17, 2016
Kimoto Co., Ltd., Saitama, JP;
Tsuyoshi Nagahama, Saitama, JP;
KIMOTO CO., LTD., Saitama, JP;
Abstract
Provided are a light-blocking member, a black resin composition, and a black resin molded article in which the optical density per predetermined thickness is increased. In a light-blocking member () comprising a substrate () and a light-blocking membrane () provided on at least one surface of this substrate (), the light-blocking membrane () containing a binder resin (), a first black pigment () having an average particle diameter Dof 0.4 to 2.5 μm, and a second black pigment () having an average particle diameter Dsmaller than this is employed. The average particle diameter Dof the second black pigment () is preferably 0.01 to 0.3 μm. The optical density of the light-blocking membrane () is preferably 0.54 to 2.00 (μm) in terms of thickness.