US PATENT SUBCLASS 534 / 608
.~.~.~.~.~.~.~ Plural azo groups in the same azo moiety 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}
603  DF  .~.~ Quaternary ammonium or hydrazinium attached indirectly to an azo group by nonionic bonding {4}
604  DF  .~.~.~ Hetero ring containing {1}
605  DF  .~.~.~.~ The pentavalent nitrogen is a ring member {2}
606  DF  .~.~.~.~.~ Azo bonded directly to a hetero ring or to a polycyclo ring system having a hetero ring as one of the cyclos {1}
607  DF  .~.~.~.~.~.~ The hetero ring contains the pentavalent nitrogen {4}
608.~.~.~.~.~.~.~ Plural azo groups in the same azo moiety attached indirectly to each other by nonionic bonding

DEFINITION

Classification: 534/608

(under subclass 607) Compounds wherein at least two azo groups within the same azo moiety are attached indirectly to each other by nonionic bonding.

(1) Note. The term "azo moiety" as used herein is intended to include singularly each of the azo compounds which complex with a heavy metal in the formation of a sandwich-type compound.

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