US PATENT SUBCLASS 534 / 852
.~.~.~.~.~.~ The -C(=X)- is in a -C(=X)X- group, wherein the X's may be the same or diverse chalcogens

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}
838  DF  .~.~ Exactly one azo group containing or azo attached indirectly to an additional azo group by ionic bonding {3}
839  DF  .~.~.~ Plural benzene rings bonded directly to the azo group {5}
843  DF  .~.~.~.~ Each of the benzene rings is monocyclic {3}
850  DF  .~.~.~.~.~ Containing -C(=X)-, wherein X is chalcogen {3}
852.~.~.~.~.~.~ The -C(=X)- is in a -C(=X)X- group, wherein the X's may be the same or diverse chalcogens {2}
853  DF  .~.~.~.~.~.~.~> The -C(=X)X- is in a -C00H group (H of OH may be replaced by the ammonium ion or a Group IA or IIA light metal)
854  DF  .~.~.~.~.~.~.~> Additional -C(=X)- bonded directly to nitrogen, which nitrogen is bonded directly to a ring

DEFINITION

Classification: 534/852

(under subclass 850) Compounds in which the -- is in a --X- group, wherein the X's may be the same or diverse chalcogens (i.e., oxygen, sulfur, selenium or tellurium).

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