US PATENT SUBCLASS 204 / 157.82
.~.~.~.~ Oxygen containing

Current as of: June, 1999
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204 /   HD   CHEMISTRY: ELECTRICAL AND WAVE ENERGY

*  DD  PROCESSES AND PRODUCTS {7}
157.15  DF  .~ Processes of treating materials by wave energy {6}
157.6  DF  .~.~ Process or preparing desired organic product containing at least one atom other than carbon and hydrogen {16}
157.81  DF  .~.~.~ Nitrogen product produced {3}
157.82.~.~.~.~ Oxygen containing {1}
157.83  DF  .~.~.~.~.~> Nitroso or oxime containing {1}

DEFINITION

Classification: 204/157.82

Oxygen containing:

(under subclass 157.81) Subject matter wherein the product nitrogen produced also contains at least one oxygen atom, e.g., isocyanate, etc.