Patents by Inventor Norriyuki OKUYAMA

Norriyuki OKUYAMA 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 MANUFACTURING ASHLESS COAL
    Publication number: 20170275547
    Abstract: The present invention is provided with a step for preheating coal, a step for heating an extraction solvent, a step for mixing the preheated coal and the extraction solvent heated to a higher temperature than the preheated coal and thereby heating the coal, a step for separating a solution in which a coal component is dissolved from the mixture of the coal and the extraction solvent, and a step for evaporating and separating the extraction solvent from the solution.
    Type: Application
    Filed: September 17, 2015
    Publication date: September 28, 2017
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Koji SAKAI, Norriyuki OKUYAMA, Takuya YOSHIDA, Shigeru KINOSHITA