US PATENT SUBCLASS 525 / 450
.~.~.~ Solid polymer derived from hydroxy-containing carboxylic acid or derivative reactant

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


525 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {4}
50  DF  .~ MIXING OF TWO OR MORE SOLID POLYMERS; MIXING OF SOLID POLYMER OR SICP WITH SICP OR SPFI; MIXING OF SICP WITH AN ETHYLENIC AGENT; MIXING OF SOLID POLYMER WITH A CHEMICAL TREATING OR ETHYLENIC AGENT; OR PROCESSES OF FORMING OR REACTING; OR THE RESULTANT PRODUCT OF ANY OF THE ABOVE OPERATIONS {32}
418  DF  .~.~ Solid polymer derived from at least one carboxylic acid or derivative {3}
450.~.~.~ Solid polymer derived from hydroxy-containing carboxylic acid or derivative reactant

DEFINITION

Classification: 525/450

Solid polymer derived from hydroxy-containing carboxylic acid or derivative reactant:

(under subclass 418) Subject matter wherein the solid polymer is derived from a hydroxyl-containing carboxylic acid or derivative reactant, e.g., lactic acid, etc.