Class / Patent application number | Description | Number of patent applications / Date published |
423594170 | Vanadium (V), niobium (Nb), or tantalum (Ta) containing | 8 |
20080199393 | Inorganic Compounds - Disclosed is a niobium suboxide powder for the manufacture of capacitors with higher break down voltages, higher temperatures of operation and elongated lifetimes. The powder is doped with nitrogen which is at least partly present in the form homogeneously distributed, x-ray detectable Nb | 08-21-2008 |
20090053132 | PROCESS FOR PREPARING POWDER OF NIOBIUM SUBOXIDES OR NIOBIUM - The present invention relates to a process for preparing powders of niobium suboxides or niobium, wherein the process comprising: mixing the niobium oxides as raw material with reducing agent, conducting a reaction at a temperature in the range of 600˜1300° C. in an atmosphere of vacuum or inert gas or hydrogen gas, leaching the reaction product to remove the residual reducing agent and the oxides of the reducing agent and other impurities, heat treating at a temperature of the range of 1000˜1600° C. in an atmosphere of vacuum or inert gas, and screening to obtain the powders of niobium suboxide or niobium of capacitor grade. According to the present invention, the niobium oxides were directly reduced into capacitor grade niobium suboxides or niobium with reducing agents which can be easily removed by mineral acids, wherein the speed of the reaction can be controlled and the reaction can directly reduce the niobium oxides into capacitor grade niobium suboxides or niobium powder. According to the present invention, the process is simple with high yield and high productivity. The products obtained have good flowability, low impurities, uniform distribution of oxygen, and have good electrical properties. | 02-26-2009 |
20090110630 | METHOD OF MANUFACTURING VANADIUM OXIDE NANOPARTICLES - Disclosed is a method of manufacturing vanadium oxide nanoparticles, which can prepare vanadium oxide particles having a size of tens of nanometers with high yield by using a simple, low-cost process. The method of manufacturing vanadium oxide nanoparticles includes preparing a solution containing a vanadium salt; impregnating an organic polymer including a nanosized pore with the prepared solution; and heating the organic polymer impregnated with the vanadium salt solution until the organic polymer is fired. | 04-30-2009 |
20090162272 | METHOD FOR PRODUCING FILM OF VANADIUM PENTOXIDE NANOWIRES HAVING IMPROVED ALIGNMENT AND VANADIUM PENTOXIDE NANOWIRE FILM PRODUCED THEREBY - A method for producing a film of vanadium pentoxide nanowires having improved alignment is provided. The method comprises the steps of a) preparing a solution of vanadium pentoxide (V | 06-25-2009 |
20090269274 | PRODUCTION METHOD OF LAYERED CRYSTAL MATERIAL - An ammonium metavanadate is heat-treated to 500° C. or less at a predetermined rate of temperature rise, whereby a microcrystal particle of a vanadium pentoxide can be formed. According to the production method described above, a crystal of a nano-vanadium having a layer length of 100 nm or less can be formed. The nano-vanadium formed by the production method described above can effectively be used for an electrode of an electric storage device such as a battery. The production method according to the present invention can be linked to a conventional production method in which an ammonium metavanadate can be formed in the course of the method, whereby the present invention can smoothly be embodied. | 10-29-2009 |
20110085964 | Method of Preparing Vanadium Dioxide Nanoparticles - Vanadium dioxide nanoparticles prepared by an inverse micelle hydrolysis of vanadium alkoxide in the presence of a basic catalyst. | 04-14-2011 |
20120107224 | Methods Of Making A Niobium Metal Oxide and Oxygen Reduced Niobium Oxides - Methods to at least partially reduce a niobium oxide are described wherein the process includes mixing the niobium oxide and niobium powder to form a powder mixture that is then heat treated to form heat treated particles which then undergo reacting in an atmosphere which permits the transfer of oxygen atoms from the niobium oxide to the niobium powder, and at a temperature and for a time sufficient to form an oxygen reduced niobium oxide. Oxygen reduced niobium oxides having high porosity are also described as well as capacitors containing anodes made from the oxygen reduced niobium oxides. | 05-03-2012 |
20180022616 | System and Method for Preparing High-Purity Vanadium Pentoxide Powder | 01-25-2018 |