US PATENT SUBCLASS 252 / 301.24
.~.~.~ Thiazoles or oxazoles

Current as of: June, 1999
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252 /   HD   COMPOSITIONS

301.16  DF  ORGANIC LUMINESCENT MATERIAL CONTAINING COMPOSITIONS {6}
301.21  DF  .~ Optical brightening compositions {6}
301.22  DF  .~.~ Heterocyclic compounds having an intercyclic acyclic methine linkage {2}
301.24.~.~.~ Thiazoles or oxazoles

DEFINITION

Classification: 252/301.24

(under subclass 301.22) Compositions in which the compound contains a five-membered ring having at least two hetero atoms of which one is nitrogen and the other is either oxygen or sulfur.