US PATENT SUBCLASS 526 / 270
.~.~.~ 5-membered heterocyclic ring compound contains at least one oxygen atom


Current as of: June, 1999
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526 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {8}
72  DF  .~ POLYMERS FROM ONLY ETHYLENIC MONOMERS OR PROCESSES OF POLYMERIZING, POLYMERIZABLE COMPOSITIONS CONTAINING ONLY ETHYLENIC MONOMERS AS REACTANTS OR PROCESSES OF PREPARING {43}
266  DF  .~.~ From monomer containing oxygen as part of a heterocyclic ring {5}
270.~.~.~ 5-membered heterocyclic ring compound contains at least one oxygen atom {1}
271  DF  .~.~.~.~> Acid anhydride {1}


DEFINITION

Classification: 526/270

(under subclass 266) Subject matter wherein an unsaturated monomer contains at least one hetero oxygen in a hetero ring containing five atoms.