US PATENT SUBCLASS 528 / 402
.~.~ Fluorine reactant contains a heterocyclic ring having a -C-O-C- group as part of the hetero ring atoms

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

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {23}
401  DF  .~ FROM FLUORINE-CONTAINING REACTANT {1}
402.~.~ Fluorine reactant contains a heterocyclic ring having a -C-O-C- group as part of the hetero ring atoms

DEFINITION

Classification: 528/402

(under subclass 401) Subject matter wherein the fluorine atom is part of a compound which contains a heterocyclic ring and wherein part of the heterocyclic ring atoms can be represented as an oxygen ether group (e.g., 1, 2-epoxy compounds, etc.).

SEE OR SEARCH CLASS

520, Synthetic Resins or Natural Rubbers, see the Glossary for a definition of the terms "heterocyclic" and "ether".