US PATENT SUBCLASS 564 / 3
.~.~.~ Ureas or thioureas with preservative or stabilizer

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

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {1}
1  DF  .~ AMINO NITROGEN CONTAINING (E.G., UREA, SULFONAMIDES, NITROSAMINES, OXYAMINES, ETC., AND SALTS THEREOF) {37}
2  DF  .~.~ With preservative or stabilizer {3}
3.~.~.~ Ureas or thioureas with preservative or stabilizer

DEFINITION

Classification: 564/3

(under subclass 2) Products wherein the compound stabilized or preserved contains the grouping below, wherein X is O or S. NN