US PATENT SUBCLASS 560 / 158
.~.~.~.~.~ Polycarbamic

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}
158.~.~.~.~.~ Polycarbamic

DEFINITION

Classification: 560/158

Polycarbamic:

(under subclass 157) Compounds wherein the acid radical contains more than one carbamic acid group.

(1) Note. This subclass also contains compounds, where an unesterified carbamic acid group may appear in the form of a free acid or may be converted into a salt or acid halide. Where an unesterified carbamic acid group has been converted into an amide and only one esterified carbamic acid group is present, the compound is placed in the appropriate subclass dealing with monocarbamic acid esters.