Patent 7763756 was granted and assigned to Sumitomo Chemical on July, 2010 by the United States Patent and Trademark Office.
A method for collecting an object material from a solution, which comprises the following steps:a step of adding a second solvent to a solution composed of an object material to be collected and a first solvent, then mixing therewith to form an emulsion containing the object material in a state under which the emulsion is not uniformly dissolved in the second solvent, in the second solvent; anda step of separating thus obtained emulsion from the solution.