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Class Information
Number: 423/544
Name: Chemistry of inorganic compounds > Sulfur or compound thereof > Oxygen containing > Sulfate
Description: 2-

Sub-classes under this class:

Class Number Class Name Patents
423/551 Alkali metal containing (li, na, k, rb, or cs) 191
423/554 Alkaline earth metal containing (mg, ca, sr, or ba) 101
423/556 Aluminum containing 90
423/545 Ammonium containing 70
423/557 Copper containing 38
423/558 Iron containing 77
423/559 Lead containing 28

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8709375 Oil extractor and the preparation method thereof Apr. 29, 2014
8664141 Catalyst for cleaning up nitrogen oxides and a method for producing same Mar. 4, 2014
8658122 Process to produce sodium sulfate and magnesium hydroxide Feb. 25, 2014
8540950 Method for the removal of chloride from zinc sulphate solution Sep. 24, 2013
8529155 Method of making pure salt from frac-water/wastewater Sep. 10, 2013
8523975 Salts of mineral nutrients stabilized with amino acids and/or ammonium salt, products and food supplements that contain them and procedures for obtaining same Sep. 3, 2013
8480997 Method for preparing manganese sulfate monohydrate Jul. 9, 2013
8273320 Method of making pure salt from frac-water/wastewater Sep. 25, 2012
8158097 Method of making pure salt from FRAC-water/wastewater Apr. 17, 2012
8128903 Method of treating a precipitate comprising iron (II) sulfate monohydrate, a plant, granular material and its uses Mar. 6, 2012
8124039 Process of silicon tetrafluoride gas synthesis Feb. 28, 2012
8124558 Catalyzed borohydrides for hydrogen storage Feb. 28, 2012
8062615 Production of silver sulfate grains using carboxylic acid additives Nov. 22, 2011
7931880 Production of silver sulfate grains using inorganic additives Apr. 26, 2011
7887776 Chemical process to produce hydrogen chloride and chloride-free compound potassium sulfate fertilizers or other metal sulfates Feb. 15, 2011
7879303 Flame synthesis of metal salt nanoparticles, in particular calcium and phosphate comprising nanoparticles Feb. 1, 2011
7846409 Deagglomerated barium sulfate Dec. 7, 2010
7799296 Method of producing a nickel salt solution Sep. 21, 2010
7780941 Potassium magnesium fertilizer Aug. 24, 2010
7695699 Metal sulfate alcohol composition and process therewith Apr. 13, 2010
7678360 Alunite type compound particles, manufacturing process thereof and use thereof Mar. 16, 2010
7655212 Production of silver sulfate grains using a fluorinated additive Feb. 2, 2010
7601318 Method for synthesis of carbon-coated redox materials with controlled size Oct. 13, 2009
7575734 Process for preparing dispersible sulfate, preferably barium sulfate nanoparticles Aug. 18, 2009
7501110 Process for producing barium sulfate, barium sulfate and use thereof Mar. 10, 2009
7468169 Process for producing calcium trisulfoaluminate and apparatus for use in said process Dec. 23, 2008
7364717 Process for converting nickel to nickel sulfate Apr. 29, 2008
7357905 Process for eliminating sulfur-containing compounds by direct oxidation Apr. 15, 2008
7338647 Synthesis of cathode active materials Mar. 4, 2008
7294319 Method for precipitating iron from a zinc sulphate solution as hematite Nov. 13, 2007
7288239 Method for producing alkaline earth sulphate nanoparticles Oct. 30, 2007
7285260 Synthesis method for carbon material based on Li.sub.xM.sub.1-yM'(XO.sub.4).sub.n Oct. 23, 2007
7261867 Production of silver sulfate grains using organo-sulfate or organo-sulfonate additives Aug. 28, 2007
7211235 Method for producing hydrotalcites May. 1, 2007
7147832 Process for the isolation and purification of zirconium peroxosulfate and uses thereof Dec. 12, 2006
7083774 Process for the preparation of vanadyl sulfate solution Aug. 1, 2006
7063824 Beneficiation of zircon Jun. 20, 2006
7045104 Volume reduction of aqueous waste by evaporative crystallization of burkeite and sodium salts May. 16, 2006
7037482 Solvent extraction of a halide from a aqueous sulphate solution May. 2, 2006
6926912 Metal compounds, mixed or sulphated, as phosphate binders Aug. 9, 2005
6872376 Modified vanadium compound, producing method thereof, redox flow battery electrolyte composite and redox flow battery electrolyte producing method Mar. 29, 2005
6858562 Catalyst for decomposing organic harmful substances and method for decomposing organic halides by use thereof Feb. 22, 2005
6846346 Sulfatization process for metal extraction from sulfide ores Jan. 25, 2005
6787120 Volume reduction of aqueous waste by evaporative crystallization of burkeite and sodium salts Sep. 7, 2004
6764663 Process for producing vanadyl/vanadous sulphate Jul. 20, 2004
6737380 Solid acid catalyst, production method thereof, and method for hydrodesulfurizing and isomerizing light hydrocarbon oil using the same May. 18, 2004
6692716 Method of formulating alkali earth salts Feb. 17, 2004
6652660 Method for treating hazardous and corrosion-inducing sulfur compounds Nov. 25, 2003
6652819 Production of high purity vanadium compound from vanadium-containing carbonaceous residues Nov. 25, 2003
6613298 Trivalent and tetravalent mixed vanadium compound producing method and vanadium electrolyte producing method Sep. 2, 2003

1 2 3

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