Patents for C01G 49 - Compounds of iron (8,643)
05/1998
05/27/1998CN1038497C Process for decontaminating solutions of Fe(II) chloride solutions in hydrochloric acid
05/20/1998EP0842990A2 Spherical colour pigments, process for their preparation and their use
05/20/1998EP0842901A1 Powder for lower layer of coating type magnetic recording medium
05/19/1998US5753028 Brilliant reddish yellow hues
05/19/1998US5753027 Pigmentary material
05/14/1998WO1998019779A1 Improved leaching of mineral ores
05/13/1998EP0628524B1 Manganese-zinc ferrite
05/13/1998CN1181749A Ferrite magnet, and powder for ferrite magnet and prodn. process
05/13/1998CN1181745A Reduction of residual chloride in iron oxides
05/13/1998CN1038348C Prodn. of metal from minerals
05/12/1998US5751516 Non-magnetic substrate material and slider assembly for use in flying-type magnetic head
05/12/1998US5750609 Ultraviolet protective agent
05/12/1998US5750045 Mixing iron chloride and oxide withnother metal chloride and oxide; roasting
05/12/1998US5750020 Cyclic, fluidized catalytic-cracking of hydrocarbon feedstock including oxides of nitrogen and sulfur, converting nitrogen oxide in regeneration zone by exposing gas stream to a catalyst bed of microcrystalline mixed oxides
05/06/1998EP0766650B1 Anaerobic removal of sulphur compounds from waste water
05/06/1998CN1180662A Continuous production of high-purity ferric oxide and device thereof
05/05/1998US5746994 Method for synthesizing ferrate and ferrate produced thereby
05/05/1998US5746991 Doped with rare earth
04/1998
04/29/1998CN1180049A Treating method for extracting iron from waste liquid containing nickel or iron chloride
04/28/1998US5744015 Solid multi-component membranes, electrochemical reactor components, electrochemical reactors and use of membranes, reactor components, and reactor for oxidation reactions
04/22/1998EP0837108A1 Magnetic iron oxide, process for its manufacture and its use
04/22/1998EP0837037A1 Lithium iron oxide, method of its synthesis, and lithium battery using the same
04/21/1998US5742070 Method for preparing an active substance of chemical cells
04/14/1998US5738957 Positive electrode active material for lithium battery
04/14/1998US5738949 Inductive component having a core formed of high-permeability MnZn ferrites and encapsulated with insulating material
04/08/1998EP0777550A4 Nanoscale particles, and uses for same
04/08/1998EP0666239B1 Composite metal oxide powder and process for producing the same
04/08/1998CN1178261A Method for recovering etchant from etching waste liquid containing iron chloride
04/07/1998US5736111 Method for producing iron-containing complex oxide powders
04/01/1998EP0832848A1 Magnetite particles, a process for producing them and applications thereof
04/01/1998CN1177572A Method for production of high-purity iron oxide red by using ammonia-soda process
03/1998
03/31/1998US5734127 Use of barium copper oxide compounds as high critical temperature superconductors
03/31/1998US5733471 Magnetite particles and process for production of the same
03/25/1998CN1037836C Process for mfg. homogeneous magnetite
03/24/1998US5731085 Spherical magnetic composite particles
03/24/1998US5730794 Use of synthetic, bainite-rich iron raw materials for preparing iron oxide pigments
03/18/1998EP0828695A1 Ferrite magnet, and powder for ferrite magnet and production process thereof
03/18/1998CN1037762C Process for producing compound poly-ferric aluminium sulfate
03/17/1998US5728363 React trivalent metal oxide powder with divalent metal compound and react intermediate formed with anion source, separation
03/12/1998WO1998010476A1 Lithium manganese oxy-fluorides for li-ion rechargeable battery electrodes
03/12/1998CA2263662A1 Lithium manganese oxy-fluorides for li-ion rechargeable battery electrodes
03/11/1998EP0827488A1 Reduction of residual chloride in iron oxides
03/11/1998CN1037705C Microfiltration
03/11/1998CN1037675C Method for producing ferric oxide black by using steel rolling greasy filth
03/10/1998US5725802 Oxidizing, sulfiding, and salt formation by reacting metal with gas in perfluoropolyether oil
03/04/1998EP0827137A1 Coating type magnetic recording medium having a multilayer structure
03/04/1998EP0826635A1 Magnetite particles and production process of the same
03/04/1998EP0777706B1 High purity ferromagnetic iron oxide pigments
03/03/1998US5723035 Coated membranes
02/1998
02/25/1998EP0825661A1 Lithium Battery
02/25/1998EP0825153A1 Lithium-iron oxide particles and process for producing the same
02/17/1998US5718880 Method of increasing the bulk density of iron oxide powder
02/17/1998US5718865 Shaping a graunlated alum and plasticizer mixture
02/17/1998US5718755 Preparation and use of iron oxide black pigment granules
02/12/1998DE19623408C1 Production of coarse grained metal oxide(s)
02/11/1998EP0823399A1 Rectangular parallelopipedic lepidocrocite particles and process for producing the same
02/11/1998CN1037335C Process for preparing ferric oxide
02/10/1998US5716565 Process for making ultra-fine stabilized zirconia particles
02/10/1998CA2084570C Manufacture of ferric sulphate compounds
02/04/1998EP0821656A1 Method for treating ferrous sulphate
02/04/1998CN1172079A Method for preparation of high iron and its compound oxidizing flocculant
02/03/1998US5714260 Used for uv shielding cosmetics, pharmaceutical compositions, and uv shielding paints
02/03/1998US5714091 Process for the partial oxydation of hydrocarbons
01/1998
01/29/1998WO1998004010A1 Positive electrode for lithium battery
01/27/1998US5711906 Method of manufacturing a black zirconia-based article and black zirconia-based decorative article notably obtained by this method
01/07/1998EP0817178A1 Coated acicular magnetic iron oxide particles
01/07/1998EP0817177A1 Iron oxide magnetic powder and magnetic recording medium using the same
01/07/1998EP0815056A1 Method of producing alpha-hematite hydrate from galvanising sludge
01/07/1998EP0724546B1 Processes for the treatment of acidic liquors and for the production of commercial products thereby
01/07/1998CN1169685A Recombined iron dioxide
01/02/1998DE19624426A1 Magnetic particle for transport of diagnostic or therapeutic agent
12/1997
12/31/1997CN1168863A Use of synthetic, bainite-rich iron raw materials for preparing iron oxide pigment
12/31/1997CN1168862A Use of synthetic, iron raw materials for preparing iron oxide pigments
12/31/1997CN1036861C Method for treating nickel-contg. etching waste fluid
12/29/1997EP0813500A1 Purification of metal containing solutions
12/24/1997CN1036775C Method for production of high-content ferric oxide red colorant from iron-contained industrial burned dregs
12/16/1997US5698131 Paste formed by dissolving two or more organometallic compounds comprising the metal element fe with another comprising mn and/or li, mg, zn, y, gd; a terpenoid carboxylic acid compound in an organic solvent; thin films
12/09/1997US5695901 Toner; prepared from microemulsion
12/09/1997US5695900 Covalently bonding silane compound with surface of iron oxide particle then attaching a hydrophobic coloring agent through silane coupler; useful for preparing toner product
12/09/1997US5695893 Material for use in the positive electrodes of lithium batteries, its manufacture, and lithium batteries incorporating this material
12/02/1997US5693212 Solid multi-component membranes, electrochemical reactor components, electrochemical reactors and use of membranes, reactor components, and reactor for oxidation reactions
11/1997
11/26/1997EP0808910A2 Apparatus and method for the generation and use of ferric ions produced by bacteria
11/26/1997EP0808801A2 Magnetite particles and process for production thereof
11/21/1997CA2205151A1 Apparatus and method for the generation and use of ferric ions
11/19/1997EP0593695B1 Method for the synthesis of mixed metal oxide crystalline powders
11/19/1997CN1165380A Ferroelectric element and method of producing the same
11/18/1997US5688480 Roastinf a mixture of metal elements to form oxides in hydrogen halide and halogen
11/18/1997US5688430 Soft ferrite raw material powder, its sintered body, and their production method and apparatus
11/18/1997US5688378 Oxidation of arsenic in solution in presence of photoabsorber
11/13/1997WO1997042125A1 Black ultrafine magnetite particles and process for preparing the same
11/12/1997EP0806396A1 Process for the preparation of metal disulfides and further processing thereof to dimetal trisulfides
11/11/1997US5686378 Iron and titanium containing oxidation catalysts, water treatment
11/04/1997US5683797 Inorganic membranes
11/04/1997US5683613 Coprecipitation of components, reaction with fluorinating agent, piezoelectric
10/1997
10/30/1997DE19717560A1 Acicular goethite, haematite and magnetic iron alloy particles
10/29/1997EP0802886A1 Preparation of metal oxide powders using activated ball milling
10/23/1997WO1997038944A1 Process for the preparation of water purification solutions containing ferric iron and the use of the product as of obtained
10/23/1997CA2250133A1 Process for the preparation of water purification solutions containing ferric iron and the use of the product as of obtained
10/16/1997WO1997038058A1 Process for preparing agglomerate-free nanoscalar iron oxide particles with a hydrolysis-resistant coating
10/16/1997DE19614136A1 Verfahren zur Herstellung agglomeratfreier nanoskaliger Eisenoxidteilchen mit hydrolysebeständigem Überzug Process for the preparation of nanoscale iron oxide particles agglomerate with hydrolysis-resistant coating
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