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Idegami
Atsushi Idegami, Niihama-Shi JP
| Patent application number | Description | Published |
|---|---|---|
| 20100242681 | Method for concentration of gold in copper sulfide minerals - Disclosed herein is a method for concentrating gold contained in a leach residue obtained in a copper hydrometallurgical process for recovering copper from a copper sulfide mineral to efficiently separate and recover gold from the leach residue. According to the method, a gold-bearing copper sulfide mineral is subjected to pressure leaching with sulfuric acid at a temperature higher than 102° C. and 112° C. or lower to obtain a leach residue, and the leach residue is subjected to flotation to separate it into a float fraction and a sink fraction. The float fraction obtained by flotation is desulfurized by heating at a temperature of 250 to 800° C. under an inert atmosphere to obtain a desulfurized product. The desulfurized product is subjected to oxidative roasting by heating at a temperature of 600 to 800° C. under an atmosphere of flowing oxygen or air to obtain an oxidatively-roasted product. The oxidatively-roasted product is dissolved in a sulfuric acid solution to obtain a copper solution, and a gold-bearing residue is separated and recovered from the copper solution. | 09-30-2010 |
Koutarou Idegami, Ishikawa JP
| Patent application number | Description | Published |
|---|---|---|
| 20090159458 | Method for Determination of Test Substance - [Problems] A highly sensitive and accurate determination of a test substance is achieved without the need of complicated procedures. | 06-25-2009 |
Masato Idegami, Tokyo-To JP
| Patent application number | Description | Published |
|---|---|---|
| 20080273061 | METHOD FOR MANUFACTURING PATTERN FORMED BODY - The main object of the present invention is to provide a method for manufacturing a pattern formed body by the electric field jet method, capable of stabilizing the discharge amount and the discharge direction of a liquid. The present invention achieves the object by providing a method for manufacturing a pattern formed body characterized in that a pattern is formed on a substrate by: discharging a liquid from a discharge orifice by applying a voltage between a first electrode, disposed in the vicinity of the discharge orifice of a nozzle of a discharge head, and a second electrode, disposed in between the discharge orifice and the substrate, having an opening for discharge; and adhering the liquid onto the substrate by passing through the opening for discharge of the second electrode. | 11-06-2008 |