US PATENT SUBCLASS 556 / 181
.~.~ Chalcogen bonded directly to aluminum

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}
170  DF  .~ ALUMINUM CONTAINING {11}
181.~.~ Chalcogen bonded directly to aluminum {1}
182  DF  .~.~.~> Plural chalcogens bonded directly to the same aluminum {2}

DEFINITION

Classification: 556/181

(under subclass 170) Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly to the aluminum.