US PATENT SUBCLASS 523 / 344
.~.~ Multistep operation achieved within a stated interval of time, e.g., total cycle time, 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}
344.~.~ Multistep operation achieved within a stated interval of time, e.g., total cycle time, etc.

DEFINITION

Classification: 523/344

Multistep operation achieved within a stated interval of time, e.g., total cycle time, etc.:

(under subclass 1) Process wherein an intentional or desired composition is treated or formed by a multistep operation which is achieved within a stated interval of time, e.g., mixing, devolatilizing, and extruding accomplished within a specified time period, etc.

(1) Note. A single step of specified duration, e.g., mixing for five minutes or heating for two minutes, etc., is not sufficient for purposes of this subclass.

(2) Note. A specified time interval for a series of steps which are themselves a subunit of a claimed process is sufficient for this subclass so long as the subunit relates to manipulation or formation of an intentional composition. On the other hand, if the subunit of the claimed process is some preliminary operation, e.g., mixing of nonpolymeric ingredients or preparation of the solid polymer, etc., then mere statements of a time interval for such subunit (or routine) is not sufficient for this subclass.

(3) Note. An open-ended range for the time interval is sufficient for this subclass, e.g., total time is "at least"

or "greater than" or "up to" six hours, etc.

(4) Note. Plural time interval steps are sufficient even if not in a "subunit" of the process so long as each time interval step relates to an operation which forms or treats an intentional composition.