US PATENT SUBCLASS 562 / 20
.~.~ Plural phosphori attached indirectly to each other 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}
20.~.~ Plural phosphori attached indirectly to each other by nonionic bonding {1}
21  DF  .~.~.~> Plural phosphori bonded directly to the same carbon {1}


DEFINITION

Classification: 562/20

(under subclass 8) Compounds in which at least two phosphorus atoms are attached indirectly to each other by nonionic bonding.

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