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:
Apr. 05, 2011
Filed:
Feb. 22, 2005
Naoya Amino, Hiratsuka, JP;
Misao Hiza, Hiratsuka, JP;
Takashi Shirokawa, Hiratsuka, JP;
Masao Nakamura, Kawasaki-ku, JP;
Koichi Endo, Kawasaki-ku, JP;
Naoya Amino, Hiratsuka, JP;
Misao Hiza, Hiratsuka, JP;
Takashi Shirokawa, Hiratsuka, JP;
Masao Nakamura, Kawasaki-ku, JP;
Koichi Endo, Kawasaki-ku, JP;
The Yokohama Rubber Co., Ltd., Tokyo, JP;
Zeon Corporation, Tokyo, JP;
Abstract
A rubber composition containing (i) a conjugated diene-based rubber gel having a toluene swelling index of 16 to 70, (ii) a diene-based rubber such as natural rubber, polyisoprene rubber, aromatic vinyl-conjugated diene copolymer rubber and/or polybutadiene rubber, and (iii) an optional carbon black and/or silica and (a) a pneumatic tire using this composition as a high hardness reinforcing layer extending from a bead along a tire sidewalls, in which the fluidity and dimensional stability at the time of extrusion are improved, while maintaining a sufficient hardness of a high hardness reinforced rubber, (b) a pneumatic tire using this composition as two ends of a tire tread extrudate, maintaining a flex fatigue of the two ends of the tread, in which the extrudability and extrusion dimensional stability are improved and (c) a pneumatic tire using the composition as a 1.5 mm to 6 mm thick undertread, in which a high elasticity and relatively thick gauge undertread, and excellent processability and steering stability are provided.