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Class Information
Number: 423/524
Name: Chemistry of inorganic compounds > Sulfur or compound thereof > Oxygen containing > Ternary compound containing hydrogen > Sulfuric acid > Nitrogenous impurity or utilizing nitrogenous catalyst or reactant > Lead chamber process
Description: Processes wherein sulfuric acid is produced from sulfur dioxide oxygen (air) and water or steam by means of nitrogen oxides (catalysts or reactants) in leaden chambers.

Patents under this class:

Patent Number Title Of Patent Date Issued
8583099 Method for uplink communication in mobile communication environment Nov. 12, 2013
6627680 Matrix of meltable minerals and fertilizers Sep. 30, 2003
4242321 Process for separating SO.sub.2 from a current of gas containing the same, and plant for carrying out such process Dec. 30, 1980
4148868 Process for separating SO.sub.2 from a current of gas containing the same Apr. 10, 1979
4003987 Waste stream treatment Jan. 18, 1977

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