US PATENT SUBCLASS 556 / 5
.~.~.~.~ Chalcogen containing preservative or stabilizer

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}
2  DF  .~.~ With preservative or stabilizer {2}
3  DF  .~.~.~ Compound preserved or stabilized contains lead bonded directly to carbon {2}
5.~.~.~.~ Chalcogen containing preservative or stabilizer

DEFINITION

Classification: 556/5

(under subclass 3) Products wherein the preserving or stabilizing agent contains chalcogen (i.e., oxygen, sulfur, selenium or tellurium).