US PATENT SUBCLASS 556 / 34
.~.~.~.~ Additonal carbon double bonded to nitrogen (e.g., bisazomethines, etc.)

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

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {3}
1  DF  .~ HEAVY METAL CONTAINING (e.g., Ga, In or T1, etc.) {19}
32  DF  .~.~ Nitrogen double bonded directly to carbon {3}
33  DF  .~.~.~ Carbocyclic ring bonded directly to the nitrogen (e.g., azomethines, etc.) {1}
34.~.~.~.~ Additonal carbon double bonded to nitrogen (e.g., bisazomethines, etc.)

DEFINITION

Classification: 556/34

(under subclass 33) Compounds which contain plural groups having carbon double bonded directly to nitrogen.

(1) Note. Examples of compounds provided for herein are: [figure] [figure]