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:
Dec. 16, 2025
Filed:
Dec. 16, 2021
Sumitomo Electric Industries, Ltd., Osaka, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
A resin composition contains a base resin including a polyolefin and an inorganic filler including silicon dioxide and surface-treated with a silane coupling agent. A remaining rate R of the inorganic filler in a fractured frozen surface is 50% or more. The remaining rate R is calculated using the following expression (1). R=(Df/Dc)×100 . . . (1). Df represents a density of the inorganic filler remaining in a fractured surface of a sheet formed of the resin composition containing the base resin and the inorganic filler, when the sheet is immersed in liquid nitrogen for 1 hour and then fractured. Dc represents a reference density of the inorganic filler detected in a cut surface of the sheet formed of the resin composition, when the sheet is cut at 24° C. using a focused ion beam without being frozen.