US PATENT SUBCLASS 556 / 139
.~.~.~ Sulfur double bonded directly to chalcogen

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}
138  DF  .~.~ Iron, cobalt, or nickel containing (Fe, Co, or Ni) {3}
139.~.~.~ Sulfur double bonded directly to chalcogen

DEFINITION

Classification: 556/139

(under subclass 138) Compounds wherein carbon is bonded directly to the metal.

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