Patents by Inventor Mitsushi Tokudome

Mitsushi Tokudome 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).

  • Blast furnace operation method and lance
    Patent number: 9945001
    Abstract: A method is provided for operating a blast furnace by blowing a solid reducing material, a flammable gaseous reducing material and a combustible gas into a blast furnace from tuyeres through a lance into a blast furnace, wherein a parallel type lance prepared by bundling three independent blowing tubes in parallel and integrally housing them into an outer tube is used, and either one or both of the gaseous reducing material and the combustible gas and the solid reducing material are simultaneously blown through the respective blowing tubes, while the blowing tube for the solid reducing material and the blowing tube for the gaseous reducing material are positioned above the blowing tube for the combustible gas in the blowing through the parallel type lance as well as a lance structure thereof.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: April 17, 2018
    Assignee: JFE STEEL CORPORATION
    Inventors: Daiki Fujiwara, Akinori Murao, Takeshi Kajisa, Mitsushi Tokudome
  • BLAST FURNACE OPERATION METHOD AND LANCE
    Publication number: 20160040261
    Abstract: A method is provided for operating a blast furnace by blowing a solid reducing material, a flammable gaseous reducing material and a combustible gas into a blast furnace from tuyeres through a lance into a blast furnace, wherein a parallel type lance prepared by bundling three independent blowing tubes in parallel and integrally housing them into an outer tube is used, and either one or both of the gaseous reducing material and the combustible gas and the solid reducing material are simultaneously blown through the respective blowing tubes, while the blowing tube for the solid reducing material and the blowing tube for the gaseous reducing material are positioned above the blowing tube for the combustible gas in the blowing through the parallel type lance as well as a lance structure thereof.
    Type: Application
    Filed: March 27, 2014
    Publication date: February 11, 2016
    Applicant: JFE STEEL CORPORATION
    Inventors: Daiki Fujiwara, Akinori Murao, Takeshi Kajisa, Mitsushi Tokudome