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:
Nov. 13, 2012
Filed:
Oct. 07, 2009
Applicants:
Junko Matsushita, Tachikawa, JP;
Yoichi Ozawa, Kodaira, JP;
Inventors:
Junko Matsushita, Tachikawa, JP;
Yoichi Ozawa, Kodaira, JP;
Assignee:
Bridgestone Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 8/00 (2006.01); C08L 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An object of the present invention is to provide a rubber composition which not only realizes sufficiently low heat generation properties but also exhibits more excellent crack growth resistance than the conventional rubber composition. The rubber composition contains in 100 mass % of rubber components thereof: 20-80 mass % of natural rubber in which the total nitrogen content in natural rubber latex is in the range of 0.1 mass % to 0.4 mass % (exclusive of 0.1 mass % and inclusive of 0.4 mass %); and butadiene-based polymer having cis content of 90% or higher.