US PATENT SUBCLASS 526 / 121
.~.~.~.~.~ Contains non-transition elemental metal, hydride thereof, or carbon to non-transition metal atom bond

Current as of: June, 1999
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526 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {8}
72  DF  .~ POLYMERS FROM ONLY ETHYLENIC MONOMERS OR PROCESSES OF POLYMERIZING, POLYMERIZABLE COMPOSITIONS CONTAINING ONLY ETHYLENIC MONOMERS AS REACTANTS OR PROCESSES OF PREPARING {43}
89  DF  .~.~ Polymerizing in the presence of a specified material other than monomer {28}
90  DF  .~.~.~ Material contains transition metal or compound thereof {15}
120  DF  .~.~.~.~ Material contains compound of non-transition heavy metal wherein non-transition heavy metal is not bonded to hydrogen or carbon {1}
121.~.~.~.~.~ Contains non-transition elemental metal, hydride thereof, or carbon to non-transition metal atom bond {1}
122  DF  .~.~.~.~.~.~> Nontransition heavy metal compound is halogen-containing

DEFINITION

Classification: 526/121

(under subclass 120) Subject matter wherein the specified material contains a nontransition metal in elemental form, or contains a hydride of a nontransition metal, or contains a compound of a nontransition metal wherein a nontransition metal atom is directly bonded to a carbon atom.

(1) Note. Included in this subclass are compounds which may contain two heavy metal atoms and wherein one of the metal atoms may be attached to a carbon or hydrogen atom and wherein the other heavy metal atom is not attached to a hydrogen or carbon atom.