logo

For the Inventor, By the Inventor

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.:

US 10967677 B1

PDFFull Text
Date of Patent:
Apr. 06, 2021

Filed:

Mar. 27, 2017

Pneumatic tire

Applicant:

Sumitomo Rubber Industries, Ltd., Kobe, JP;

Inventors:

Suguru Izumo, Kobe, JP;

Ryoji Kojima, Kobe, JP;

Assignee:

SUMITOMO RUBBER INDUSTRIES, LTD., Kobe, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Michael N Orlando

Assistant Examiner:

Elizabeth Bradford

Int. Cl.
CPC ...
B60C 1/00 (2006.01); C08K 3/36 (2006.01); C08L 9/00 (2006.01); C08K 5/548 (2006.01); C08K 3/06 (2006.01); C08L 57/02 (2006.01); C08K 5/47 (2006.01); C08L 91/00 (2006.01); C08K 5/18 (2006.01); C08L 45/00 (2006.01); C08K 5/09 (2006.01); C08K 3/22 (2006.01); C08L 47/00 (2006.01); C08K 3/04 (2006.01); C08C 19/25 (2006.01); C08L 9/06 (2006.01); C08L 15/00 (2006.01); C08L 21/00 (2006.01); C08K 3/02 (2006.01);
U.S. Cl.
CPC ...
B60C 1/0016 (2013.01); C08C 19/25 (2013.01); C08K 3/04 (2013.01); C08K 3/06 (2013.01); C08K 3/22 (2013.01); C08K 3/36 (2013.01); C08K 5/09 (2013.01); C08K 5/18 (2013.01); C08K 5/47 (2013.01); C08K 5/548 (2013.01); C08L 9/00 (2013.01); C08L 9/06 (2013.01); C08L 15/00 (2013.01); C08L 21/00 (2013.01); C08L 45/00 (2013.01); C08L 47/00 (2013.01); C08L 57/02 (2013.01); C08L 91/00 (2013.01); C08K 2003/023 (2013.01); C08K 2201/006 (2013.01); C08L 2205/02 (2013.01); C08L 2205/08 (2013.01);
Abstract

There is provided a pneumatic tire having improved wet grip performance and fuel efficiency in a good balance. The pneumatic tire is provided with a tread composed of a rubber composition comprising not less than 0.5 part by mass of silica and not less than 5 parts by mass of a resin based on 100 parts by mass of a rubber component comprising 40 to 100% by mass of a styrene-butadiene rubber and 0 to 60% by mass of a butadiene rubber, wherein an adhesive force of the rubber composition measured by the specified adhesion test method is not less than 300 when an adhesive force of a reference rubber composition wherein the whole amount of resin has been replaced by oil is assumed to be 100, and a ratio of a loss tangent tan δat 0° C. of the rubber composition to a loss tangent tan δat 70° C. of the rubber composition (tan δ/tan δis from 3.0 to 10.

Find Patent Forward Citations

Loading…