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:
Jan. 01, 2019
Filed:
Aug. 07, 2015
Applicant:
Bridgestone Corporation, Tokyo, JP;
Inventor:
Satoshi Hamatani, Higashimurayama, JP;
Assignee:
BRIDGESTONE CORPORATION, Chou-ku, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L 7/00 (2006.01); C08K 3/04 (2006.01); B60C 1/00 (2006.01); C08L 21/00 (2006.01); C09C 1/48 (2006.01); C01B 32/00 (2017.01);
U.S. Cl.
CPC ...
C08K 3/04 (2013.01); B60C 1/00 (2013.01); C01B 32/00 (2017.08); C08L 7/00 (2013.01); C08L 21/00 (2013.01); C09C 1/48 (2013.01); C01P 2006/12 (2013.01); C01P 2006/19 (2013.01); C01P 2006/80 (2013.01); C08K 2201/003 (2013.01); C08K 2201/006 (2013.01); C08K 2201/011 (2013.01);
Abstract
Provided is a rubber composition that, when adopted in a tire member such as a tread, displays low heat generation, high abrasion resistance, and high cut resistance, and enables excellent fatigue cracking resistance to be realized. The rubber composition contains carbon black that satisfies relationship formulae (1) to (3), shown below.62.5×244+hydrogen amount of carbon black≤8337.5  (1)244−0.25×≥62.5  (2)+0.75×Δ50≥152.5  (3).