US PATENT SUBCLASS 556 / 464
.~.~ Ring consisting of silicon, oxygen, and carbon

Current as of: June, 1999
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556 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {3}
400  DF  .~ SILICON CONTAINING {19}
464.~.~ Ring consisting of silicon, oxygen, and carbon

DEFINITION

Classification: 556/464

(under subclass 400) Compounds containing a ring which includes at least one atom each of silicon, oxygen, and carbon, and contains no other elements as ring members.

(1) Note. An example of a compound provided for herein is: [figure]