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:
May. 29, 1990
Filed:
Mar. 22, 1989
Applicant:
Inventors:
Shuichi Akita, Yokohama, JP;
Fumitoshi Suzuki, Yokohama, JP;
Yasushi Kikuchi, Odawara, JP;
Hideyuki Oishi, Hiratsuka, JP;
Assignees:
Nippon Zeon Co., Ltd., Tokyo, JP;
The Yokohama Rubber Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C08L / ; C08L / ; C08L / ;
U.S. Cl.
CPC ...
525194 ; 1522 / ; 525196 ; 525237 ;
Abstract
A rubber composition for tire tread, comprising a rubber mixture composed of two kinds of styrene-butadiene copolymer rubber different from each other in the styrene content and the vinyl bond content in butadiene, polybutadiene rubber, natural rubber and/or synthetic polyisoprene rubber.