US PATENT SUBCLASS 560 / 6
.~.~.~ Polycyclo ring system having the hydrophenanthrene and at least one additional ring as cyclos

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

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {17}
1  DF  .~ Carboxylic acid esters {14}
5  DF  .~.~ Hydrophenanthrene in acid moiety {2}
6.~.~.~ Polycyclo ring system having the hydrophenanthrene and at least one additional ring as cyclos

DEFINITION

Classification: 560/6

Polycyclo ring system having the hydrophenanthrene and at least one additional ring as cyclos:

(under subclass 5) Compounds wherein the hydrophenanthrene nucleus contains additional rings formed by ortho fusion or by a bridge.

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