US PATENT SUBCLASS 264 / 331.21
.~.~.~.~.~ Carboxylic acid or derivative

Current as of: June, 1999
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264 /   HD   PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES

239  DF  MECHANICAL SHAPING OR MOLDING TO FORM OR REFORM SHAPED ARTICLE {10}
299  DF  .~ Shaping against forming surface (e.g., casting, die shaping, etc.) {10}
319  DF  .~.~ Applying heat or pressure {6}
330  DF  .~.~.~ Organic material shaping {1}
331.11  DF  .~.~.~.~ Synthetic resin containing {7}
331.21.~.~.~.~.~ Carboxylic acid or derivative

DEFINITION

Classification: 264/331.21

Carboxylic acid or derivative:

(under subclass 331.11) Processes in which the synthetic resin contains a carboxylic acid or derivative group.

(1) Note. For the definition of a carboxylic acid or derivative, see Class 528, subclass 271.