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. 22, 1983
Filed:
Feb. 12, 1982
Applicant:
Inventors:
Akinori Tokieda, Chigasaki, JP;
Sumio Takasugi, Hiratsuka, JP;
Assignee:
The Yokohama Rubber Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J / ; C08J / ; C08K / ; C08L / ;
U.S. Cl.
CPC ...
523351 ; 524495 ; 524526 ;
Abstract
A rubber composition comprising a specific extender oil-extended styrene.butadiene copolymer rubber, at least one other diene rubber and, as required, carbon black, the rubber composition being useful in the preparation of tire treads having decreased rolling resistance without decreasing braking performance. This invention also relates to a specific two-step mixing method for preparing a rubber composition for producing tire treads having further improved rolling resistance and like properties.