US PATENT SUBCLASS 560 / 159
.~.~.~.~.~ Additional nitrogen in acid moiety

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}
129  DF  .~.~ Acyclic acid moiety {9}
155  DF  .~.~.~ Nitrogen in acid moiety other than as nitroso or isocyanate (e.g., amino acid esters, etc.) {8}
157  DF  .~.~.~.~ Carbamic acid {8}
159.~.~.~.~.~ Additional nitrogen in acid moiety

DEFINITION

Classification: 560/159

Addition nitrogen in acid moiety:

(under subclass 157) Compounds wherein the acid radical contains covalently bonded nitrogen in addition to that present in the carbamic acid group.

(1) Note. The additional nitrogen may be present in the form of an isocyanate or nitroso group.

(2) Note. See subclass 156 for nitro containing carbamic acid esters.

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