US PATENT SUBCLASS 423 / 419.1
.~.~ Carbonate or bicarbonate

Current as of: June, 1999
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423 /   HD   CHEMISTRY OF INORGANIC COMPOUNDS

414  DF  CARBON OR COMPOUND THEREOF {3}
415.1  DF  .~ Oxygen containing {5}
419.1.~.~ Carbonate or bicarbonate {5}
420  DF  .~.~.~> Ammonium containing
420.2  DF  .~.~.~> Plural metal containing
421  DF  .~.~.~> Alkali metal containing (Li, Na, K, Rb, or Cs) {5}
430  DF  .~.~.~> Alkaline earth metal containing (Mg, Ca, Sr, or Ba) {2}
433  DF  .~.~.~> Lead containing {2}

DEFINITION

Classification: 423/419.1

Carbonate or bicarbonate:

(under subclass 415.1) Products or processes wherein the product contains a carbonate (CO3[supscrpt]2-[end supscrpt]) or bicarbonate (HCO3[supscrpt]-[end supscrpt]) radical.

(1) Note. A percarbonate may also be expressed as a carbonate in addition to a peroxide (e.g., Na2CO3 + H2O2); such compounds are assumed to have a percarbonate (CO4[supscrpt]2-[end supscrpt]) radical.

SEE OR SEARCH THIS CLASS, SUBCLASS:

105, for processes of treating mixtures to obtain a zinc (Zn), cadmium (Cd), or mercury (Hg) carbonate including (a) forming an insoluble substance in a liquid and (b) chemically forming a compound having the carbonate (CO3[supscrpt]2-[end supscrpt]) radical.

415.2, for products and processes wherein a compound has a percarbonate grouping.