US PATENT SUBCLASS 152 / 525
.~.~ Characterized by chemical composition or physical properties of external sidewall materials

Current as of: June, 1999
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152 /   HD   RESILIENT TIRES AND WHEELS

151  DF  TIRES, RESILIENT {14}
450  DF  .~ Pneumatic tire or inner tube {23}
525.~.~ Characterized by chemical composition or physical properties of external sidewall materials

DEFINITION

Classification: 152/525

Characterized by chemical composition or physical properties of external sidewall materials:

(under subclass 450) Subject matter which includes structure of that part of the tire between the edge of the tread and the rim which comprises a material formed by the interaction of two or more chemical substances or a combination of chemical substances exhibiting an essential or distinctive attribute to enhance the adhesion of the said part to the tire body or carcass or improve the general structural

characteristics of the tire.

SEE OR SEARCH THIS CLASS, SUBCLASS:

537, for chemical compositions or physical properties of belt or breaker materials.