US PATENT SUBCLASS 534 / 752
.~.~.~ Polycyclo ring system having a hetero atom shared by at least two rings or at least two hetero atoms which are not members of the same ring

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

Internet Version by PATENTEC © 1999      Terms of Use


534 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (CLASS 532, SUBCLASS 1) {8}
573  DF  .~ Azo {51}
751  DF  .~.~ Hetero ring containing {5}
752.~.~.~ Polycyclo ring system having a hetero atom shared by at least two rings or at least two hetero atoms which are not members of the same ring

DEFINITION

Classification: 534/752

(under subclass 751) Compounds which contain a polycyclo ring system having at least two hetero atoms which are not members of the same ring or having a hetero atom which is shared by at least two rings of the polycyclo ring system.

(1) Note. Examples of compounds provided for herein are: [figure] [figure]