US PATENT SUBCLASS 556 / 81
.~.~ Germanium, tin, or lead containing (Ge, Sn, or Pb)


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

Internet Version by PATENTEC © 1999      Terms of Use



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.~.~ Germanium, tin, or lead containing (Ge, Sn, or Pb) {6}
82  DF  .~.~.~> Tin bonded directly to tin or lead bonded directly to lead
83  DF  .~.~.~> Plural heavy metals bonded directly to the same chalcogen (e.g., two germaniums bonded directly to the same oxygen, etc.) {1}
85  DF  .~.~.~> Sulfur double bonded directly to chalcogen {1}
87  DF  .~.~.~> Carbon bonded directly to the metal {2}
105  DF  .~.~.~> Containing -C(=X)X-, wherein the X's are the same or diverse chalcogens {2}
108  DF  .~.~.~> Carbocyclic ring and the metal are bonded directly to the same chalcogen (e.g., stannous catecholates, etc.) {1}


DEFINITION

Classification: 556/81

(under subclass 1) Compounds which contain germanium, tin or lead.