Patents by Inventor Takayuki Takarada

Takayuki Takarada 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).

  • Vanadium recovery method, method for producing electrolytic solution for redox flow batteries, vanadium recovery device, and device for producing electrolytic solution for redox flow batteries
    Patent number: 10844458
    Abstract: The present invention is characterized by comprising: an acid leaching step for obtaining a leach liquid by causing leaching of, by means of an acid, a metal mixture at least containing vanadium and at least one type of a divalent or trivalent metal selected from nickel, cobalt, manganese, palladium, platinum, copper, and zinc; a complex generation step for adding an ammoniacal alkaline aqueous solution to the leach liquid for adjusting the pH to 10-12 and generating, in the alkaline aqueous solution, an ammine complex of a divalent or trivalent metal ion and an anion complex of a tetravalent and/or pentavalent vanadium ion; a divalent or trivalent metal recovery step for adding a carrier having a carboxyl group to the alkaline aqueous solution in which the ammine complex and the anion complex are generated, causing the divalent or trivalent metal ion in the ammine complex to be selectively adsorbed onto the carrier, and recovering the divalent or trivalent metal ion; and a vanadium recovery step for recoveri
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: November 24, 2020
    Assignees: National University Corporation Gunma University, Nihon Kanki Industry Co., Ltd., Sumitomo Electric Industries, Ltd., Kawasaki Jukogyo Kabushiki Kaisha
    Inventors: Takayuki Takarada, Naokatsu Kannari, Tsutomu Nishide
  • Vanadium Recovery Method, Method for Producing Electrolytic Solution for Redox Flow Batteries, Vanadium Recovery Device, and Device for Producing Electrolytic Solution for Redox Flow Batteries
    Publication number: 20180209014
    Abstract: The present invention is characterized by comprising: an acid leaching step for obtaining a leach liquid by causing leaching of, by means of an acid, a metal mixture at least containing vanadium and at least one type of a divalent or trivalent metal selected from nickel, cobalt, manganese, palladium, platinum, copper, and zinc; a complex generation step for adding an ammoniacal alkaline aqueous solution to the leach liquid for adjusting the pH to 10-12 and generating, in the alkaline aqueous solution, an ammine complex of a divalent or trivalent metal ion and an anion complex of a tetravalent and/or pentavalent vanadium ion; a divalent or trivalent metal recovery step for adding a carrier having a carboxyl group to the alkaline aqueous solution in which the ammine complex and the anion complex are generated, causing the divalent or trivalent metal ion in the ammine complex to be selectively adsorbed onto the carrier, and recovering the divalent or trivalent metal ion; and a vanadium recovery step for recoveri
    Type: Application
    Filed: July 8, 2016
    Publication date: July 26, 2018
    Inventors: Takayuki Takarada, Naokatsu Kannari, Tsutomu Nishide
  • Plasma cutting method for cutting a carbon steel plate and for reducing fine particles
    Patent number: 8598487
    Abstract: [PROBLEMS] To reduce the generation of fume in cutting a material to be cut typified by a steel plate with plasma.
    Type: Grant
    Filed: June 18, 2008
    Date of Patent: December 3, 2013
    Assignee: Koike Sanso Kogyo Co., Ltd.
    Inventors: Akira Furujo, Masatoshi Motoyama, Nobuo Ito, Go Sasaki, Takayuki Takarada, Kayoko Morishita
  • Plasma Cutting Method
    Publication number: 20110297652
    Abstract: [PROBLEMS] To reduce the generation of fume in cutting a material to be cut typified by a steel plate with plasma.
    Type: Application
    Filed: June 18, 2008
    Publication date: December 8, 2011
    Applicant: KOIKE SANSO KOGYO CO., LTD.
    Inventors: Akira Furujo, Masatoshi Motoyama, Nobuo Ito, Go Sasaki, Takayuki Takarada, Kayoko Morishita
  • Catalytic coal gasification by utilizing chlorides
    Patent number: 4848983
    Abstract: A process of catalytic coal gasification characterized by mixing an inexpensive, low rank coal with an aqueous solution of inexpensive, widely existing alkali metal or alkaline earth metal chlorides, such as Nacl, KCl, or the like; adding a pH adjustor such as ammonia to the resulting mixture to adjust pH to 5.about.12, whereby an ion exchange is effected between said metal and hydrogen in the coal, thereby loading only metals as a catalyst on the coal; washing the coal with water to remove chloride by-products; and running steam onto the catalyst-loaded coal at high temperatures and high pressures.
    Type: Grant
    Filed: October 6, 1987
    Date of Patent: July 18, 1989
    Assignee: Tohoku University
    Inventors: Akira Tomita, Yasuo Ohtsuka, Takayuki Takarada, Toshihide Nabatame