US PATENT SUBCLASS 423 / 421
.~.~.~ Alkali metal containing (Li, Na, K, Rb, or Cs)

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

Internet Version by PATENTEC © 1999      Terms of Use


423 /   HD   CHEMISTRY OF INORGANIC COMPOUNDS

414  DF  CARBON OR COMPOUND THEREOF {3}
415.1  DF  .~ Oxygen containing {5}
419.1  DF  .~.~ Carbonate or bicarbonate {5}
421.~.~.~ Alkali metal containing (Li, Na, K, Rb, or Cs) {5}
422  DF  .~.~.~.~> Hydrogen containing (bicarbonate) {3}
426  DF  .~.~.~.~> Densifying soda ash
427  DF  .~.~.~.~> By reacting a bicarbonate
428  DF  .~.~.~.~> By reacting sulfur containing compound
429  DF  .~.~.~.~> By reacting halogen containing compound

DEFINITION

Classification: 423/421

(under subclass 419.1) Products or processes wherein the carbonate contains an alkali metal (lithium, sodium, potassium, rubidium or cesium).

SEE OR SEARCH THIS CLASS, SUBCLASS:

186, for processes of treating mixtures with a carbon containing compound to form an alkali metal carbonate or bicarbonate, including the step of forming an insoluble substance in a liquid.