US PATENT SUBCLASS 564 / 25
.~.~.~ Processes utilizing cyano containing compound

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}
25.~.~.~ Processes utilizing cyano containing compound

DEFINITION

Classification: 564/25

(under subclass 17) Processes wherein a cyano compound is utilized in preparing a thiourea.

(1) Note. This subclass contains, for example, the production of thiourea by reaction of cyanamide with hydrogen sulfide.