US PATENT SUBCLASS 504 / 221
.~.~.~ Hetero ring is six-membered including nitrogen and sulfur

Current as of: June, 1999
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504 /   HD   PLANT PROTECTING AND REGULATING COMPOSITIONS

116  DF  PLANT GROWTH REGULATING COMPOSITIONS (E.G., HERBICIDES, ETC.) {9}
189  DF  .~ Organic active compound containing {19}
209  DF  .~.~ Hetero ring containing {11}
221.~.~.~ Hetero ring is six-membered including nitrogen and sulfur {1}
222  DF  .~.~.~.~> Plural ring nitrogens in the hetero ring (e.g., thiadiazines, etc.)

DEFINITION

Classification: 504/221

Hetero ring is six-membered including nitrogen and sulfur:

(under subclass 209) Compositions wherein the hetero ring is six-membered and has nitrogen, sulfur, and carbon as ring members.