US PATENT SUBCLASS 556 / 108
.~.~.~ Carbocyclic ring and the metal are bonded directly to the same chalcogen (e.g., stannous catecholates, etc.)

Current as of: June, 1999
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556 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {3}
1  DF  .~ HEAVY METAL CONTAINING (e.g., Ga, In or T1, etc.) {19}
81  DF  .~.~ Germanium, tin, or lead containing (Ge, Sn, or Pb) {6}
108.~.~.~ Carbocyclic ring and the metal are bonded directly to the same chalcogen (e.g., stannous catecholates, etc.) {1}
109  DF  .~.~.~.~> Plural chalcogens and plural nitro groups bonded directly to the same benzene ring (e.g., lead styphnates, lead salts of di-nitroresorcinol, etc.)

DEFINITION

Classification: 556/108

(under subclass 81) Compounds wherein a carbocyclic ring and the metal are bonded directly to the same chalcogen (i.e., oxygen, sulfur, selenium, or tellurium).

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