US PATENT SUBCLASS 435 / 117
.~ Preparing heterocyclic carbon compound having only O, N, S, Se, or Te as ring hetero atoms

Current as of: June, 1999
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435 /   HD   CHEMISTRY: MOLECULAR BIOLOGY AND MICROBIOLOGY

41  DF  MICRO-ORGANISM, TISSUE CELL CULTURE OR ENZYME USING PROCESS TO SYNTHESIZE A DESIRED CHEMICAL COMPOUND OR COMPOSITION {26}
117.~ Preparing heterocyclic carbon compound having only O, N, S, Se, or Te as ring hetero atoms {4}
118  DF  .~.~> Containing two or more hetero rings {1}
120  DF  .~.~> Nitrogen or oxygen hetero atom and at least one other diverse hetero ring atom in the same ring
121  DF  .~.~> Nitrogen as only ring hetero atom {1}
123  DF  .~.~> Oxygen as only ring hetero atom {3}

DEFINITION

Classification: 435/117

Preparing heterocyclic carbon compound having only O, N, S, Se, or Te as ring hetero atoms:

(under subclass 41) Processes wherein the product synthesized is a carbon compound which contains a ring composed of carbon and at least one element from the group consisting of nitrogen, sulfur, selenium, tellurium, or oxygen and no other atoms.

(1) Note. Processes wherein the product synthesized is an acid anhydride or lactone, or lactam are properly classified herein.