US PATENT SUBCLASS 528 / 27
.~.~.~ Organic Si-free reactant contains a heterocyclic ring

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

Internet Version by PATENTEC © 1999      Terms of Use


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

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {23}
10  DF  .~ FROM SILICON REACTANT HAVING AT LEAST ONE SILICON-TO-HYDROGEN OR -CARBON BOND {12}
25  DF  .~.~ With organic silicon-free reactant {4}
27.~.~.~ Organic Si-free reactant contains a heterocyclic ring

DEFINITION

Classification: 528/27

(under subclass 25) Subject matter wherein at least one silicon-free organic reactant contains a heterocyclic ring.

SEE OR SEARCH CLASS

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