US PATENT SUBCLASS 568 / 31
.~.~.~.~ Carbonyl containing (e.g., ketone containing, etc.)

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

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {4}
18  DF  .~ SULFUR CONTAINING {9}
27  DF  .~.~ Oxygen bonded directly to sulfur (e.g., sulfoxides, etc.) {3}
28  DF  .~.~.~ Plural oxygens bonded directly to the same sulfur (e.g., sulfones, etc.) {6}
31.~.~.~.~ Carbonyl containing (e.g., ketone containing, etc.)

DEFINITION

Classification: 568/31

(under subclass 28) Compounds which contain a