US PATENT SUBCLASS 562 / 23
.~.~ Chalcogen attached indirectly to the phosphorus by nonionic bonding

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

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {41}
8  DF  .~ Phosphorus acids or salts thereof (i.e., compounds having -XH, wherein X is chalcogen, attached directly to phosphorus by nonionic bonding and wherein the hydrogen may be replaced by a substituted or unsubstituted ammonium or by a group IA or IIA light metal) {7}
23.~.~ Chalcogen attached indirectly to the phosphorus by nonionic bonding {1}
24  DF  .~.~.~> The chalcogen is in a -C(=X)- group

DEFINITION

Classification: 562/23

(under subclass 8) Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium or tellurium) is attached indirectly to the phosphorus atom by nonionic bonding.

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