US PATENT SUBCLASS 534 / 858
.~.~.~.~.~.~.~ Plural chalcogens bonded directly to the acyclic carbon or carbon chain

Current as of: June, 1999
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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}
856  DF  .~.~.~.~.~ Nitrogen, other than as nitro or nitroso, attached indirectly to the azo group by nonionic bonding {2}
857  DF  .~.~.~.~.~.~ Hydroxy bonded directly to acyclic carbon or carbon chain (H of hydroxy may be replaced by the ammonium ion or Group IA or IIA light metal) {1}
858.~.~.~.~.~.~.~ Plural chalcogens bonded directly to the acyclic carbon or carbon chain

DEFINITION

Classification: 534/858

(under subclass 857) Compounds wherein an additional chalcogen, (i.e., oxygen, sulfur, selenium or tellurium) is bonded directly to the acyclic carbon or carbon chain.

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