US PATENT SUBCLASS 558 / 181
.~.~.~.~.~ The carbon of the -C(=X)X- group is bonded directly to the phosphorus or to nitrogen which is bonded directly to the phosphorus

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

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {21}
70  DF  .~ Phosphorus esters (i.e., compounds having the phosphorus ester group, wherein trivalent or pentavalent phosphorus and carbon are bonded directly to the same divalent chalcogen, and wherein the carbon may be single bonded to any atom but may be multiple bonded only to carbon) {18}
177  DF  .~.~ Chalcogen attached indirectly to the phosphorus by acyclic nonionic bonding {2}
178  DF  .~.~.~ The chalcogen, X, is in a -C(=X)- group {1}
179  DF  .~.~.~.~ The -C(=X)- is part of a -C(=X)X- group, wherein the X's are the same or diverse chalcogens {3}
181.~.~.~.~.~ The carbon of the -C(=X)X- group is bonded directly to the phosphorus or to nitrogen which is bonded directly to the phosphorus

DEFINITION

Classification: 558/181

(under subclass 179) Compounds in which the carbon of the -C(=X) (X)- group is bonded directly to the phosphorus or to nitrogen, which nitrogen is bonded directly to the phosphorus.

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