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:
Mar. 26, 2024
Filed:
May. 14, 2021
Shiraishi Kogyo Kaisha, Ltd., Osaka, JP;
Kenichiro Eguchi, Amagasaki, JP;
Yutaka Minamino, Amagasaki, JP;
SHIRAISHI KOGYO KAISHA, LTD., Osaka, JP;
Abstract
A light reflecting body includes a base containing a resin material and a calcium carbonate and includes a metal layer on the surface of the base. The resin material is selected from a polyester resin composition, a polyarylate resin composition, and a mixed resin composition thereof. The calcium carbonate has a BET specific surface area of 1 to 15 m/g, a pore distribution curve determined by mercury porosimetry that the top of a peak representing interparticle void size is in a pore size range of 0.1 to 1.0 μm, a particle size distribution determined by using an electron microscope that the proportion of particles having a particle size of 0.1 μm or less is 10% or less of the calcium carbonate, and the residue on a sieve having a mesh size of 45 μm after wet sieving of the calcium carbonate is 0.1% or less.