US PATENT SUBCLASS 558 / 154
.~.~ Hydrazine, or substituted hydrazine, group attached directly or indirectly to the phosphorus by nonionic bonding (i.e., HHN-NH- group, wherein substitution may be made for hydrogen only)

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}
154.~.~ Hydrazine, or substituted hydrazine, group attached directly or indirectly to the phosphorus by nonionic bonding (i.e., HHN-NH- group, wherein substitution may be made for hydrogen only)

DEFINITION

Classification: 558/154

(under subclass 70) Compounds wherein a hydrazine, or a substituted hydrazine, group is attached directly or indirectly to the phosphorus by nonionic bonding.

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

(2) Note. The hydrazine group is HHNNH-. Replacement of one or more hygrogens affords a substituted hydrazine group.