Patents by Inventor Takaya Akashi

Takaya Akashi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for concentrating metal compound by reduction and oxidation
    Patent number: 10378084
    Abstract: To concentrate metals such as gallium from ore which is extracted from mines or used electronic components while suppressing the quantity of waste liquid generated is difficult. A first solid metal compound which contains a metal selected from a group consisting of gallium, indium, germanium, tellurium, and cesium at a first metal content in a mixture of the first solid metal compound is reduced to form a gaseous metal compound, the gaseous metal compound is oxidized to form a second solid metal compound, and the second solid metal compound is collected at a second metal content which is higher than the first metal content.
    Type: Grant
    Filed: September 2, 2013
    Date of Patent: August 13, 2019
    Assignee: HOSEI UNIVERSITY
    Inventor: Takaya Akashi
  • METHOD FOR CONCENTRATING METAL COMPOUND
    Publication number: 20150225812
    Abstract: To concentrate metals such as gallium from ore which is extracted from mines or used electronic components while suppressing the quantity of waste liquid generated is difficult. A first solid metal compound which contains a metal selected from a group consisting of gallium, indium, germanium, tellurium, and cesium at a first metal content in a mixture of the first solid metal compound is reduced to form a gaseous metal compound, the gaseous metal compound is oxidized to form a second solid metal compound, and the second solid metal compound is collected at a second metal content which is higher than the first metal content.
    Type: Application
    Filed: September 2, 2013
    Publication date: August 13, 2015
    Applicant: Hosei University
    Inventor: Takaya Akashi