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. 17, 2017
Filed:
Jan. 30, 2014
Bridgestone Corporation, Tokyo, JP;
Otsuka Chemical Co., Ltd., Osaka-shi, Osaka, JP;
Noriaki Yukimura, Kodaira, JP;
Takahiro Yoshizawa, Kodaira, JP;
Kazuhiro Kodama, Tokushima, JP;
Hiroaki Yuasa, Itano-gun, JP;
Noriaki Shiina, Tokushima, JP;
Takashi Sato, Tokushima, JP;
Hiroyuki Ishitobi, Awa, JP;
Mifuyu Ueno, Itano-gun, JP;
Shinya Nakashima, Itano-gun, JP;
Masaki Abe, Itano-gun, JP;
BRIDGESTONE CORPORATION, Tokyo, JP;
OTSUKA CHEMICAL CO., LTD., Osaka-shi, unknown;
Abstract
The invention provides a rubber composition prepared by mixing, per 100 parts by mass of the rubber component comprising at least 50% by mass of a diene-based rubber, from 20 to 150 parts by mass of a filler, and from 0.05 to 30 parts by mass of a compound A which has a specific amidine structure and has a functional group reactive with the diene-based rubber. The rubber composition improves both a high elastic modulus and a low tan δ. The invention also provides a pneumatic tire using the rubber composition.