US PATENT SUBCLASS 523 / 164
.~.~ Lead pencil or marking crayon 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}
164.~.~ Lead pencil or marking crayon composition or process of preparing

DEFINITION

Classification: 523/164

Lead pencil or marking crayon composition or process of preparing:

(under subclass 1) Subject matter wherein a composition having utility as the writing material in a lead pencil or crayon composition is claimed or solely disclosed or to processes of preparation thereof.

(1) Note. For an explanation of patent placement referring to claimed or solely disclosed, see (in the class definition) the section of SEARCH THIS CLASS, SUBCLASS that refers to this subclass.

(2) Note. A composition which is not solely disclosed as useful as the marking material in a lead pencil or crayon is placed as appropriate in Classes 523 and 524 hereinbelow.

SEE OR SEARCH CLASS

106, Compositions: Coating or Plastic,

19+, for a lead pencil or crayon composition not containing a synthetic resin.

401, Coating Implements With Material Supply,

49+, for pencils wherein significant structure of the pencil is claimed.