Patents by Inventor Yoshinari Baba

Yoshinari Baba 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 SELECTIVELY RECOVERING ARSENIC-CONTAINING COPPER MINERAL, AND FLOTATION AGENT USED IN SAME
    Publication number: 20230338971
    Abstract: In order to decrease arsenic, which is a harmful substance, in a copper concentrate, provided is a method for selectively recovering an arsenic-containing copper mineral from a mixture including the arsenic-containing copper mineral and a non-arsenic-containing copper mineral, and a flotation agent used in the same. For a collecting agent, which is a component of the flotation agent used in a flotation step for selectively recovering the arsenic-containing copper mineral from the mixture including the arsenic-containing copper mineral and the non-arsenic-containing copper mineral, a sulfide compound having an R1—S—R2 (in this expression, R1 is a C5-10 alkyl group, and R2 is a C1-10 alkyl group) structure such as methyl n-octyl sulfide or di-n-octyl sulfide is used.
    Type: Application
    Filed: July 15, 2021
    Publication date: October 26, 2023
    Applicant: Japan Organization for Metals and Energy Security
    Inventors: Taro KAMIYA, Kosuke KONNO, Tatsuhiro ONO, Refilwe Sandra MAGWANENG, Yoshinari BABA, Kuniko ATAE
  • Extraction agent for palladium and platinum and process of extracting same
    Patent number: 5342526
    Abstract: Disclosed herein are an extracting agent for precious metal having the below foretold and a process of extracting precious metals employing the said extracting agent from a hydrochloric acid solution containing the precious metals. Further, by controlling the concentration of the hydrochloric acid solution and the extraction time, the separation of the metals can be performed.
    Type: Grant
    Filed: November 12, 1992
    Date of Patent: August 30, 1994
    Assignee: Tanaka Kikinzoku Kogyo K.K.
    Inventors: Katsutoshi Inoue, Kazuharu Yoshizuka, Yoshinari Baba, Masato Tazaki