US PATENT SUBCLASS 252 / 389.62
.~.~.~.~ Alkali metal or NH4+ containing

Current as of: June, 1999
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252 /   HD   COMPOSITIONS

380  DF  PRESERVATIVE AGENTS {3}
387  DF  .~ Anti-corrosion {1}
388  DF  .~.~ Organic compound containing {6}
389.1  DF  .~.~.~ Component inorganic or organic comprising element other than C,H,O,N,S, and halogen {10}
389.62.~.~.~.~ Alkali metal or NH4+ containing

DEFINITION

Classification: 252/389.62

Alkali metal or NH(4)+ containing:

(under subclass 389.1) Compositions which include a compound

containing an atom of an alkali metal (i.e., lithium, sodium, potassium, rubidium, cesium or francium or NH(4)+).