US PATENT SUBCLASS 556 / 444
.~.~.~ Two carbons bonded directly to the same oxygen

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}
443  DF  .~.~ Plural silicons attached by a chain consisting of oxygen and carbon, which chain may be part of a ring {1}
444.~.~.~ Two carbons bonded directly to the same oxygen

DEFINITION

Classification: 556/444

(under subclass 443) Compounds in which two carbons are bonded directly to the same oxygen, i.e., compounds containing an ether linkage.

(1) Note. Examples of compounds provided for herein are: [figure] [figure]