US PATENT SUBCLASS 552 / 292
.~.~ Polycyclo ring system having the cyclohexadiene as one of the cyclos

Current as of: June, 1999
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552 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, subclass 1) {11}
291  DF  .~ Cyclohexadiene having atoms double bonded directly at the 1- and 2- positions (e.g., orthoquinones, etc.) {1}
292.~.~ Polycyclo ring system having the cyclohexadiene as one of the cyclos

DEFINITION

Classification: 552/292

(under subclass 291) Compounds wherein the cyclohexadiene is one of the cyclos in a polycyclo ring system.

(1) Note. This subclass contains, for example: [figure]