US PATENT SUBCLASS 556 / 3
.~.~.~ Compound preserved or stabilized contains lead bonded directly to carbon

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

DEFINITION

Classification: 556/3

(under subclass 2) Products wherein the compound that is preserved or stabilized contains lead bonded directly to carbon.

(1) Note. Stabilization of the common antiknock compound, tetraethy lead, is provided for herein.