US PATENT SUBCLASS 564 / 427
.~.~.~.~ Tricyclo ring system

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


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}
427.~.~.~.~ Tricyclo ring system

DEFINITION

Classification: 564/427

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

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