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. 11, 2007
Filed:
May. 21, 2002
Yoichi Mizuno, Kobe, JP;
Masato Kawase, Kobe, JP;
Mamoru Uchida, Kobe, JP;
Naohiko Kikuchi, Kobe, JP;
Yoichi Mizuno, Kobe, JP;
Masato Kawase, Kobe, JP;
Mamoru Uchida, Kobe, JP;
Naohiko Kikuchi, Kobe, JP;
Sumitomo Rubber Industries, Ltd., Kobe-Shi, JP;
Abstract
To provide a rubber composition for breaker having balanced properties among rigidity, heat resistance, adhesiveness, humid aging adhesion and elongation, and a pneumatic tire having a breaker layer or a belt layer comprising the rubber composition. A rubber composition for breaker comprises 55 to 65 parts by weight of carbon black, 5 to 15 parts by weight of silica, 3.5 to 4.5 parts by weight of sulfur, at least 0.08 part by weight of cobalt, a resorcinol resin and a methylene donor based on 100 parts by weight of a rubber component containing a natural rubber and/or an isoprene rubber as a main component.