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:
Jun. 07, 2016
Filed:
Jun. 26, 2012
Daisuke Sato, Kobe, JP;
Daisuke Sato, Kobe, JP;
SUMITOMO RUBBER INDUSTRIES, LTD., Kobe-Shi, JP;
Abstract
Provided are a rubber composition improving wet-grip performance and its temperature dependence while ensuring good fuel economy, and a pneumatic tire including the composition. The composition includes, per 100% by mass of a rubber component: 5-55% by mass of an aromatic vinyl compound/conjugated diene compound copolymer (A) having an aromatic vinyl compound content of at least 5% by mass but less than 15% by mass and a vinyl bond content in a conjugated diene compound moiety of 10-70 mol %; and 5-75% by mass of an aromatic vinyl compound/conjugated diene compound copolymer (B) having an aromatic vinyl compound content of at least 15% by mass but less than 30% by mass and a vinyl bond content in a conjugated diene compound moiety of 10-70 mol %, and also includes, per 100 parts by mass of the rubber component, 10-150 parts by mass of a silica having a NSA of 40-400 m/g.