US PATENT SUBCLASS 564 / 55
.~.~.~.~.~ Plural benzene rings bonded directly to urea nitrogen

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}
32  DF  .~.~ Ureas (i.e., HNH-CO-HNH, wherein substitution may be made for hydrogen only) {9}
47  DF  .~.~.~ Benzene ring containing {2}
48  DF  .~.~.~.~ Benzene ring bonded directly to urea nitrogen (i.e., anilides) {5}
55.~.~.~.~.~ Plural benzene rings bonded directly to urea nitrogen

DEFINITION

Classification: 564/55

(under subclass 48) Compounds wherein more than one benzene ring is bonded directly to the same urea nitrogen or to different urea nitrogen.

(1) Note. This subclass contains, for example: [figure] [figure]