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:
Sep. 27, 2022
Filed:
Aug. 29, 2019
Tokuyama Dental Corporation, Tokyo, JP;
TOKUYAMA DENTAL CORPORATION, Tokyo, JP;
Abstract
Provided is a composite material which comprises a resin matrix and inorganic particles dispersed therein, wherein the inorganic particles comprise: one or more groups (G-PID) of spherical particles uniform in particle diameter which comprise aggregates of inorganic spherical particles having a specific average primary-particle diameter, have a narrow particle-size-distribution width, and have a lower refractive index than the resin matrix; and a group (G-SFP) of ultrafine particles. The inorganic spherical particles which constitute all the groups of spherical particles uniform in particle diameter contained in the resin matrix have an arrangement structure which is a short-range order structure satisfying a specific requirement. Also provided are a curable composition giving the composite material and a method for producing the curable composition.