Patents
Sitemap › C01 - Inorganic chemistry › C01F - Compounds of the metals beryllium, magnesium, aluminium, calcium, strontium, barium, radium, thorium, or of the rare-earth metals › C01F 11 - Compounds of calcium, strontium, or barium
Patents for C01F 11 - Compounds of calcium, strontium, or barium (8,019)
08/1998
08/05/1998CN1039379C Process for prepn. of biological active calcium by low-temp two-step hydrolysis method
08/04/1998US5788738 High temperature vapors quenched by adiabatic expansion
07/1998
07/21/1998US5783038 Ink jet recording paper incorporating novel precipitated calcium carbonate pigment
07/15/1998CN1187464A Process for preparing calcium carbonate
07/14/1998US5779464 Calcium carbonate sorbent and methods of making and using same
07/09/1998WO1998029601A2 The use of calcium carbonate in an acidic aqueous media
07/08/1998EP0851839A1 Method of manufacturing high purity calcium carbonate
07/08/1998EP0851780A2 Process for the transformation of halogenated refrigerant gases
07/07/1998US5776426 Using caustic liquid and lime
07/07/1998US5776245 Method for hydrophobing gypsum
07/01/1998EP0850880A1 Aqueous slurry precipitated calcium carbonate and ground calcium carbonate in combination
07/01/1998EP0850879A2 Dispersed aqueous suspensions
07/01/1998EP0850685A2 Dispersed aqueous suspensions
07/01/1998CN1186047A Preparation high purity strontium carbonate
06/1998
06/25/1998WO1998019351A3 Nanostructured ion conducting solid electrolytes
06/24/1998EP0849236A1 The production of slaked lime
06/24/1998EP0848736A1 Acid resistant calcium carbonate composition containing an aluminum salt and uses therefor
06/23/1998US5769906 Process for recovering the salt constituents from hardening-shop salt baths
06/23/1998CA2023434C Flue gas desulfurization with oxidation of calcium sulfite in fgd discharges
06/18/1998WO1998025854A1 Dewatering of calcium carbonate
06/18/1998WO1998025853A1 Process for preparing calcium carbonate
06/18/1998WO1998025852A1 Process for preparing calcium carbonate
06/18/1998CA2274953A1 Dewatering of calcium carbonate
06/11/1998WO1998024725A1 Process for preparing calcium carbonate which contains low concentrations of non-calcium metals
06/10/1998EP0846656A1 Process for regenerating sodium sulphide from the sodium sulphate which forms in treating lead paste from exhausted batteries
06/04/1998CA2222514A1 Process for regenerating sodium sulphide from the sodium sulphate which forms in treating lead past from exhausted batteries
06/03/1998EP0844905A2 Process for removing carbon dioxide from gas mixtures
06/03/1998CN1183381A Method for producing gypsum, table salt and magnesium chloride from calcium-cantg. waste liquid and high- and low-temp. salt
06/03/1998CN1038578C Ultra-fine calcium carbonate preparation method
06/02/1998US5759939 Composite metal oxide adsorbents
05/1998
05/27/1998EP0844213A1 Precipitates and their production
05/27/1998EP0690820B1 Isolation of the calcium-phosphate crystals of bone
05/26/1998US5756432 Colloidal calcium hydroxide, its preparation and uses
05/26/1998US5756210 Polymer/CaCO3 composite core/sheath particulates and hollow CaCO3
05/19/1998CA2066655C Precipitated calcium carbonate
05/14/1998WO1998020079A1 Stabilized calcium carbonate composition using sodium silicate and one or more weak acids or alum
05/14/1998CA2270769A1 Stabilized calcium carbonate composition using sodium silicate and one or more weak acids or alum
05/13/1998EP0840710A2 Continuous precipitated calcium carbonate production equipment
05/13/1998CN1181774A Ink jet recording paper incorporating novel precipitated calcium carbonate pigment
05/13/1998CN1181352A Prodn. tech for barium sulfate
05/13/1998CN1038320C Process for manufacturing strontium carbonate
05/12/1998US5750086 Reaction of magnesium sulfate and calcium hydroxide then carbonation with carbon dioxide, zinc sulfate and sulfuric acid
05/07/1998WO1998019351A2 Nanostructured ion conducting solid electrolytes
04/1998
04/23/1998WO1998016471A1 Precipitated calcium carbonate and method for the production thereof
04/22/1998EP0837114A1 Ultraviolet absorber composition and process for production thereof
04/22/1998CN1179401A Method for producing crystalline form nm-class calcium carbonate
04/21/1998US5741471 Process for the preparation of discrete particles of calcium carbonate
04/15/1998EP0835343A1 Filler for use in paper manufacture and procedure for producing a filler
04/15/1998CN1178772A Compound process for producing strontium carbonate using celestite as raw material
04/14/1998US5738821 Nozzle for electric dispersion reactor
04/14/1998US5738758 Process for the conversion of calcium sulfide
04/08/1998EP0833799A1 Method for production of sodium bicarbonate, sodium carbonate and ammonium sulfate from sodium sulfate
04/08/1998EP0777550A4 Nanoscale particles, and uses for same
04/02/1998WO1998013298A1 Method of recovering calcium from waste material or contaminated natural calcic material
03/1998
03/31/1998US5733070 Method of making solution grade calcium sulfate dihydrate
03/24/1998US5730784 Oxidation to sulfur dioxide
03/18/1998EP0828689A1 Metal and fluorine values recovery from fluoride salt matrices
03/12/1998WO1998009753A1 Integrated thermal process and apparatus for the continuous synthesis of nanoscale powders
03/12/1998CA2263902A1 Integrated thermal process and apparatus for the continuous synthesis of nanoscale powders
03/03/1998US5723097 Method of treating spent potliner material from aluminum reduction cells
02/1998
02/25/1998CN1174173A Preparation of superfine active calcium carbonate
02/19/1998WO1998006668A1 Silver halides of altered crystal habit or morphology and methods for producing same
02/19/1998WO1998006667A1 Calcium carbonates of altered crystal habit or morphology and methods for producing same
02/19/1998DE19632155A1 Utilising carbide slurry
02/11/1998CN1172637A Metal fluoride particles and dental composition including said metal fluoride purticles
02/10/1998US5716419 Process for crystallization of mineral salts
02/10/1998CA2032425C Process for removing sulfur dioxide from flue gases
02/04/1998EP0821931A2 Metal fluoride particles and a dental composition including said metal fluoride particles
02/04/1998CN1172073A Production technique for ultramicrofine light calcium carbonate
01/1998
01/27/1998US5712219 Air and water pollution control
01/20/1998CA1339624C Process for controlling a sodium sulfate-containing residue
01/14/1998EP0818427A2 Process for producing pure calcium sulfate beta-hemihydrate
01/14/1998CN1170394A Method for purification of calcium carbonate
01/14/1998CN1169955A Process for producing calcium carbonate particles having size of 0.1 to 1.0 micrometer
01/08/1998CA2209589A1 Process for preparing virtually phase-pure calcium sulphate .beta.-hemihydrate
01/07/1998EP0815174A2 Ink jet recording paper incorporating novel precipitated calcium carbonate pigment
01/07/1998EP0646099B1 Method for preparing an aqueous calcium sulphate-based suspension
01/06/1998US5705140 Process for the transformation of halogenated refrigerant gases
12/1997
12/17/1997EP0812300A1 Calcium carbonate precipitation method
12/16/1997US5698169 Methods and agents for the extraction of cesium and strontium from nuclear waste
12/16/1997US5698107 Treatment for acid mine drainage
12/09/1997US5695733 Clustered precipitated calcium carbonate particles
12/09/1997CA2163569C Rhombohedral calcium carbonate and accelerated heat-aging process for the production thereof
12/02/1997US5693597 Antiwear, extreme pressure oil additives
12/02/1997US5693296 Calcium hydroxide pretreatment of biomass
11/1997
11/27/1997WO1997044500A1 Treatment of fly ash/apc residues including lead salt recovery
11/27/1997CA2253644A1 Treatment of fly ash/apc residues including lead salt recovery
11/26/1997EP0712326A4 Complexation-mediated crystal-forming reactions using complexing agents
11/25/1997US5691397 Removal of biomass
11/25/1997US5690897 Removing iron by chelation with edta or other chelating agent
11/19/1997CN1165115A Synthetic chalcoalumite compounds and process for producing thereof
11/13/1997DE19618668A1 Separating hydrochloric acid from waste calcium chloride solution with calcium carbonate production
11/11/1997US5686053 Wet-type flue gas desulfurization plant and method making use of a solid desulfurizing agent
11/06/1997DE19704365A1 Staining colour giving high gloss coating on paper and cardboard contains carbonate pigment
11/05/1997CN1163860A Process for preparing colloidal calcium carbonate
10/1997
10/30/1997WO1997040118A1 Ultraviolet absorber composition and process for production thereof
10/30/1997WO1997040106A1 Method for preparing particles comprising a core and a silica shell
10/30/1997WO1997039728A1 Toothpaste composition comprising a silica and calcium carbonate based abrasive or additive, compatible with fluorine
10/30/1997CA2251640A1 Toothpaste composition comprising a silica and calcium carbonate based abrasive or additive, compatible with fluorine
10/29/1997EP0802883A1 Method for coproducing calcium carbonate and sodium hydroxide
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