US PATENT SUBCLASS 204 / 157.91
.~.~.~.~ Fused or bridged ring 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}
157.9  DF  .~.~.~ Alcohol product produced {1}
157.91.~.~.~.~ Fused or bridged ring containing

DEFINITION

Classification: 204/157.91

Fused or bridged ring containing:

(under subclass 157.9) Subject matter wherein the alcohol contains a fused- or bridged-ring system.

(1) Note. A fused- or bridged-ring system for this subclass denotes a ring system having at least two rings which (a) share with each other two adjacent ring atoms, or (b) share with each other three or more ring atoms and wherein each ring having shared atoms is a carbocyclic ring.