US PATENT SUBCLASS 558 / 45
.~.~ Phosphorus attached directly or indirectly to the sulfonate group 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}
44  DF  .~ Sulfonate esters (i.e., compounds having the sulfonate group, -O-S(=O)(=O) , wherein the single bonded oxygen is bonded directly to carbon, which carbon may be single bonded to any atom but may be multiple bonded only to carbon) {7}
45.~.~ Phosphorus attached directly or indirectly to the sulfonate group by nonionic bonding

DEFINITION

Classification: 558/45

(under subclass 44) Compounds wherein the sulfonate group is attached directly or indirectly to phosphorus by nonionic bonding.

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