US PATENT SUBCLASS 528 / 37
.~.~.~ Reactant contains a silicon atom as a ring member of a cyclic compound

Current as of: June, 1999
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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}
10  DF  .~ FROM SILICON REACTANT HAVING AT LEAST ONE SILICON-TO-HYDROGEN OR -CARBON BOND {12}
33  DF  .~.~ Silicon reactant contains two or more silicon atoms {4}
37.~.~.~ Reactant contains a silicon atom as a ring member of a cyclic compound

DEFINITION

Classification: 528/37

(under subclass 33) Subject matter wherein a containing compound possesses at least two silicon atoms with at least one silicon atom as ring member of a nonhetero-cyclic ring (e.g., cyclic trisiloxane, etc.).

SEE OR SEARCH THIS CLASS, SUBCLASS:

35, for a cyclic silicon reactant wherein two or more silicon atoms in the ring are joined by carbon atoms.

SEE OR SEARCH CLASS

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