US PATENT SUBCLASS 558 / 202
.~.~ Halogen attached directly to the phosphorus by nonionic bonding


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}
202.~.~ Halogen attached directly to the phosphorus by nonionic bonding


DEFINITION

Classification: 558/202

(under subclass 70) Compounds in which the phosphorus is attached directly to halogen by nonionic bonding.

(1) Note. An example of a compound provided for herein is: [figure]