US PATENT SUBCLASS 556 / 6
.~.~.~ Nitrogen 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}
6.~.~.~ Nitrogen containing preservative or stabilizer

DEFINITION

Classification: 556/6

(under subclass 2) Products wherein the preserving or stabilizing agent contains nitrogen.