US PATENT SUBCLASS 523 / 307
.~.~ Utilizing a temperature greater than 250 degrees C (482 degrees F) or less than 0 degrees C

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}
307.~.~ Utilizing a temperature greater than 250 degrees C (482 degrees F) or less than 0 degrees C {1}
309  DF  .~.~.~> With removal or comminution of material at a temperature greater than 250 degrees C or less than 0 degrees C, e.g., freeze drying, etc.

DEFINITION

Classification: 523/307

Utilizing a temperature greater than 250 deg.C (482 deg.F) or less than 0 deg.C:

(under subclass 1) Process wherein an intentional composition is treated or formed at a temperature specified at either below 32 deg.F or above 482 deg.F, i.e., 0 deg.C or above 250 deg.C.

(1) Note. A process performed while "frozen" or under "cryogenic" conditions will be placed herein unless there is a disclosure that the temperature is greater than 32 deg.F.