US PATENT SUBCLASS 556 / 145
.~.~.~.~.~.~ Chalcogen, nitrogen, halogen or -C(=X)-, wherein X is chalcogen, bonded directly to at least one of the carbocyclic rings

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}
140  DF  .~.~.~ Carbon bonded directly to the metal {2}
143  DF  .~.~.~.~ Plural unsaturated five-membered carbocyclic rings bonded directly to the metal (e.g., ferrorcenes, bis indenyl iron, etc.) {1}
144  DF  .~.~.~.~.~ Chalcogen, nitrogen or halogen containing {1}
145.~.~.~.~.~.~ Chalcogen, nitrogen, halogen or -C(=X)-, wherein X is chalcogen, bonded directly to at least one of the carbocyclic rings

DEFINITION

Classification: 556/145

(under subclass 144) Compounds in which a chalcogen, nitrogen, halogen or -C(=X)-, wherein X is chalcogen, is bonded directly to at least one of the carbocyclic rings.

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