US PATENT SUBCLASS 564 / 31
.~.~.~.~ Thiourea per se or salt thereof

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}
17  DF  .~.~ Thioureas (i.e., HNH-C(=S)-HNH, wherein substitution may be made for hydrogen only) {7}
30  DF  .~.~.~ Acyclic {1}
31.~.~.~.~ Thiourea per se or salt thereof

DEFINITION

Classification: 564/31

(under subclass 30) The compound which is thiourea, or its salts and processes of preparation not provided for above.