US PATENT SUBCLASS 106 / 287.21
.~.~ Two hetero ring atoms

Current as of: June, 1999
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106 /   HD   COMPOSITIONS: COATING OR PLASTIC

*  DD  COATING OR PLASTIC COMPOSITIONS {40}
287.2  DF  .~ Heterocyclic (only N, O, S, Se, Te) {2}
287.21.~.~ Two hetero ring atoms

DEFINITION

Classification: 106/287.21

Two hetero ring atoms:

(under subclass 287.2) Coating or plastic compositions wherein a compound contains at least two hetero ring atoms.

(1) Note. The hetero atoms do not have to be diverse.