US PATENT SUBCLASS 523 / 348
.~.~ Utilizing plural interconnected distinct forming or treating zones or locations other than nominal screw extruder, e.g., zones interconnected in parallel or having varying flow velocity, etc.

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}
348.~.~ Utilizing plural interconnected distinct forming or treating zones or locations other than nominal screw extruder, e.g., zones interconnected in parallel or having varying flow velocity, etc.

DEFINITION

Classification: 523/348

Utilizing plural interconnected distinct forming or treating zones or locations other than nominal screw extruder, e.g., zones interconnected parallel or having varying flow velocity, etc.:

(under subclass 1) Subject matter wherein a desired or intentional composition is treated or formed in a process utilizing plural interconnected distinct forming or treating zones.

(1) Note. A mere screw extruder is excluded herefrom since the zones are not necessarily distinct; however, an extruder

specifically described as having a plurality of distinct zones is included herein.

(2) Note. The interconnected zones can be arranged in series or in parallel relationship.

(3) Note. Distinctness of zones is indicated by language showing either physical separation, differing configuration, the assignment of different function, or distinctness of location within a physically continuous zone (e.g., points A and B in an extruder zone, etc.

(4) Note. Interconnected indicates physical connection enabling directed flow of fluent materials therebetween.