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:
Feb. 18, 2003
Filed:
Dec. 22, 1995
Kiyoshige Muraoka, Kobe, JP;
Toshiro Matsuo, Kakogawa, JP;
Sumitomo Rubber Industries, Ltd., Hyogo-ken, JP;
Abstract
A pneumatic tire is disclosed having an improved electric conductivity and an excellent rolling resistance, which includes a tread and a conductive thin film provided on the surface of the tread continuously in the circumferential direction of the tire, wherein the conductive thin film has a thickness of not more than 0.5 mm and a volume resistivity of not more than 10 &OHgr;·cm, and the tread is made from a rubber composition comprising a diene rubber and 40 to 100 parts by weight of silica having a BET specific surface area of 100 to 300 m /g per 100 parts by weight of the diene rubber, the content of silica being at least 50% by weight based on the whole filler incorporated in the composition. The conductive thin film may be prepared from a rubber composition comprising at least 10 parts by weight of carbon black per 100 parts by weight of a rubber.