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:
Feb. 24, 2009
Filed:
Jan. 26, 2005
Applicants:
Yasuhisa Minagawa, Kobe, JP;
Noriko Yagi, Kobe, JP;
Inventors:
Yasuhisa Minagawa, Kobe, JP;
Noriko Yagi, Kobe, JP;
Assignee:
Sumitomo Rubber Industries, Ltd., Kobe-shi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60C 1/00 (2006.01); C08K 3/38 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention provides a rubber composition, in which reaction efficiency of the silane coupling agent in kneading is improved, generation of bubbles is suppressed, abrasion resistance is improved and rolling resistance is reduced. Specifically, the rubber composition comprises silica and 3 to 15 parts by weight of a silane coupling agent and 1.5 to 15 parts by weight of a potassium salt based on 100 parts by weight of the silica.