US PATENT SUBCLASS 534 / 754
.~.~.~.~ At least three azo groups attached indirectly to each other by nonionic bonding

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}
753  DF  .~.~.~ Azo bonded directly to the hetero ring or to a polycyclo ring system which contains the hetero ring as one of the cyclos {11}
754.~.~.~.~ At least three azo groups attached indirectly to each other by nonionic bonding {1}
755  DF  .~.~.~.~.~> Additional hetero ring or polycyclo ring system which contains a hetero ring as one of the cyclos bonded directly to an azo group

DEFINITION

Classification: 534/754

(under subclass 753) Compounds wherein at least three azo groups are attached indirectly to each other by nonionic bonding.

(1) Note. An example of a compound provided for herein is: [figure]