US PATENT SUBCLASS 556 / 443
.~.~ Plural silicons attached by a chain consisting of oxygen and carbon, which chain may be part of a ring

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

DEFINITION

Classification: 556/443

(under subclass 400) Compounds in which at least two silicons are attached to each other by a chain consisting of oxygen and carbon, which chain may be part of a ring.

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

SEE OR SEARCH CLASS

552, Organic Compounds,

653, for silicon derivatives of Vitamin D compounds, cholecalciferols, activated 7-dehydrocholesterols, dihydrotachysterols, 3-5 cyclovitamin D compounds, etc.