US PATENT SUBCLASS 558 / 191
.~.~.~ Nitrogen or halogen attached directly to the phosphorus by nonionic bonding

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


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}
190  DF  .~.~ Nitrogen attached indirectly to the phosphorus by nonionic bonding {3}
191.~.~.~ Nitrogen or halogen attached directly to the phosphorus by nonionic bonding

DEFINITION

Classification: 558/191

(under subclass 190) Compounds wherein the phosphorus is attached directly to nitrogen or halogen by nonionic bonding.

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