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:
Jan. 16, 1996
Filed:
Sep. 07, 1994
Applicant:
Inventors:
Yasushi Kikuchi, Hiratsuka, JP;
Tetsuo Ochiai, Hiratsuka, JP;
Takashi Shirokawa, Hiratsuka, JP;
Hajime Fujii, Hiratsuka, JP;
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
C08K / ;
U.S. Cl.
CPC ...
524495 ; 524496 ;
Abstract
A rubber composition for a tire tread comprising (i) 100 parts by weight of a diene based rubber containing at least one styrene-butadiene copolymer rubber having a glass transition temperature of -60.degree. C. to -20.degree. C. and (ii) 20 to 75 parts by weight of carbon black having CTAB of 85 to 110 m.sup.2 /g, C-DBP of more than 105 ml/100 g, N.sub.2 SA/IA of more than 1.10, Tint of more than 105, .DELTA.Dst of 60 to 80 nm, and CTAB of less than 230-5.8 (dn) wherein dn is the average particle size (nm), measured by an electron microscope.