US PATENT SUBCLASS 526 / 174
.~.~.~.~ Contains at least two diverse alkali metal atoms, at least one of which is in the form of a free alkali metal, or in the form of a hydride, or has an alkali metal to carbon 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}
173  DF  .~.~.~ Material contains elemental alkali metal, hydride thereof, or alkali metal to carbon atom bond (Li, Na, K, Rb, Cs, Fr) {9}
174.~.~.~.~ Contains at least two diverse alkali metal atoms, at least one of which is in the form of a free alkali metal, or in the form of a hydride, or has an alkali metal to carbon atom bond

DEFINITION

Classification: 526/174

(under subclass 173) Subject matter wherein the specified material contains two or more different alkali metals in elemental or compound form and at least one of the alkali metals is a free alkali metal, alkali metal hydride, or a compound containing an alkali metal atom bonded to a carbon atom.

(1) Note. Included herein are compounds which contain two diverse alkali metals in a single compound or alloy.