US PATENT SUBCLASS 540 / 135
.~.~.~.~ Nitrogen attached indirectly to ring carbon of the phthalocyanine ring system by acyclic nonionic bonding

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540 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {1}
1  DF  .~ HETEROCYCLIC CARBON COMPOUNDS CONTAINING A HETERO RING HAVING CHALCOGEN (I.E., OXYGEN, SULFUR, SELENIUM OR TELLURIUM) OR NITROGEN AS THE ONLY RING HETERO ATOMS {6}
121  DF  .~.~ Azaporphyrins {1}
122  DF  .~.~.~ Phthalocyanines {8}
135.~.~.~.~ Nitrogen attached indirectly to ring carbon of the phthalocyanine ring system by acyclic nonionic bonding

DEFINITION

Classification: 540/135

(under subclass 122) Compounds wherein nitrogen is attached indirectly to ring carbon of the phthalocyanine ring system by acyclic nonionic bonding.

(1) Note. The structure below is an example of a compound provided for herein, wherein CuPc is a copper phthalocyanine radical. [figure]