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. 16, 1999
Filed:
Mar. 24, 1998
Applicant:
Inventors:
Yasushi Kikuchi, Hiratsuka, JP;
Toru Nakamura, Hiratsuka, JP;
Hiroyuki Saito, Hiratsuka, JP;
Katsuki Hayashida, Hiratsuka, JP;
Assignee:
The Yokohama Rubber Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C08K / ;
U.S. Cl.
CPC ...
524495 ; 525496 ;
Abstract
A rubber composition for a tire tread comprising 100 parts by weight of a diene rubber and 35 to 60 parts by weight of a carbon black having a nitrogen specific surface area (N.sub.2 SA) of 120-150 m.sup.2 /g, a 24M4DBP of 95-110 ml/100 g, an N.sub.2 SA/IA of 0.95-1.05, a .DELTA.Dst of less than 70 nm, a Tint of more than 130, and a toluene discoloration (T%) of not less than 70% but less than 80%.