US PATENT SUBCLASS 523 / 149
.~.~ Friction element composition or process of preparing

Current as of: June, 1999
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523 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {1}
1  DF  .~ PROCESSES OF PREPARING A DESIRED OR INTENTIONAL COMPOSITION OF AT LEAST ONE NONREACTANT MATERIAL AND AT LEAST ONE SOLID POLYMER OR SPECIFIED INTERMEDIATE CONDENSATION PRODUCT, OR PRODUCT THEREOF {71}
149.~.~ Friction element composition or process of preparing {2}
150  DF  .~.~.~> Nonskid or nonslip composition for vehicle or pedestrian movement
152  DF  .~.~.~> For wheeled vehicle {4}

DEFINITION

Classification: 523/149

Friction element composition process of preparing:

(under subclass 1) Subject matter wherein a composition having utility as a friction element is claimed or solely disclosed or ton processes of preparation thereof.

(1) Note. See the class definition of this class for an explanation of patent placement referring to "claimed or solely disclosed".

(2) Note. Any composition used to enhance friction is condsidered to be a friction element for this subclass.

SEE OR SEARCH CLASS

51, Abrasive Tool Making Process, Material, or Composition, for an abrasive material or composition.

508, Solid Antifriction Devices, Materials Therefor, Lubricant or Separant Compositions for Moving Solid Surfaces, and Miscellaneous Mineral Oil Compositions,

110+, for liquid, plastic, or fluent compositions specialized and designed for use between two moving surfaces for reducing friction therebetween or for preventing the surfaces from contacting each other.

451, Abrading, for apparatus and processes of abrading.