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:
Feb. 27, 2024
Filed:
Apr. 06, 2021
Idemitsu Kosan Co., Ltd., Tokyo, JP;
Junichi Tsuzuki, Sodegaura, JP;
Toshio Isozaki, Chiba, JP;
IDEMITSU KOSAN CO., LTD., Tokyo, JP;
Abstract
An internal part for a lighting tool for a vehicle, including: an entering portion for light; an emitting portion for light; and a light-guiding portion to guide the light from the entering portion to the emitting portion, the part being arranged at a distance of 5 mm or less from a light source, wherein the part is a molded body formed of a resin composition, wherein a 5-millimeter thick plate, obtained by subjecting the resin composition to injection molding at a cylinder temperature of 260° C., a die temperature of 80° C., a cycle time of 50 seconds, and a retention time of 230 seconds, a total light transmittance of 80% or more, and a ratio (X/Y) of a spectral light transmittance (X) of the 5-millimeter thick plate at a wavelength of 350 nm to a spectral light transmittance (Y) thereof at a wavelength of 400 nm is 0.75 or more.