US PATENT SUBCLASS 556 / 18
.~.~.~ Plural phosphori bonded directly to the same carbon or attached to each other by an acyclic chain which chain consists of carbons or of carbons and chalcogens

Current as of: June, 1999
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556 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {3}
1  DF  .~ HEAVY METAL CONTAINING (e.g., Ga, In or T1, etc.) {19}
13  DF  .~.~ Phosphorus containing {6}
18.~.~.~ Plural phosphori bonded directly to the same carbon or attached to each other by an acyclic chain which chain consists of carbons or of carbons and chalcogens

DEFINITION

Classification: 556/18

(under subclass 13) Compounds wherein at least two phosphori are bonded directly to the same carbon or attached to each other by an acyclic chain which consists of carbons or of carbons and chalcogens (i.e., oxygen, sulfur, selenium, or tellurium).

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