US PATENT SUBCLASS 564 / 428
.~.~.~.~ Bicyclo ring system

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}
305  DF  .~.~ Benzene ring containing {24}
426  DF  .~.~.~ Polycyclo ring system {2}
428.~.~.~.~ Bicyclo ring system {1}
429  DF  .~.~.~.~.~> Naphthyl ring system and benzene ring bonded directly to the same nitrogen

DEFINITION

Classification: 564/428

(under subclass 426) Compounds wherein the polycyclo ring system is bicyclo.

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