US PATENT SUBCLASS 556 / 407
.~.~ Nitrogen is ring member

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}
400  DF  .~ SILICON CONTAINING {19}
407.~.~ Nitrogen is ring member {2}
408  DF  .~.~.~> Chalcogen is member of the ring
409  DF  .~.~.~> Plural silicons in the ring

DEFINITION

Classification: 556/407

(under subclass 400) Compounds which contain a ring having nitrogen as a ring member.

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