US PATENT SUBCLASS 556 / 93
.~.~.~.~.~.~ Having -C(=X)X-, are the same or diverse chalcogens, attached indirectly to the metal by nonionic bonding (e.g., dialkyl tin thioglycollic acid esters, etc.)

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}
81  DF  .~.~ Germanium, tin, or lead containing (Ge, Sn, or Pb) {6}
87  DF  .~.~.~ Carbon bonded directly to the metal {2}
88  DF  .~.~.~.~ Chalcogen bonded directly to the metal {2}
89  DF  .~.~.~.~.~ Plural chalcogens bonded directly to the metal {2}
93.~.~.~.~.~.~ Having -C(=X)X-, are the same or diverse chalcogens, attached indirectly to the metal by nonionic bonding (e.g., dialkyl tin thioglycollic acid esters, etc.)

DEFINITION

Classification: 556/93

(under subclass 89) Compounds in which a -C(=X)X- group, wherein the X's are the same or diverse chalcogens, is attached indirectly to the metal by nonionic bonding.

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