Patents by Inventor Tooru Kitazaki

Tooru Kitazaki 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).

  • Cone valve
    Patent number: 10465807
    Abstract: A cone valve of the present invention enables to extend a lifespan more than a conventional cone valve even if it is used as a check valve when feeding slurry containing highly abrasive coarse particles. A cone valve (1) used as a check valve when feeding slurry, comprising at least a valve body (11), a valve seat (13), and a spring (14) incorporated to make the valve body (11) contact the valve seat (14), wherein an entire length of the spring (14) is at least shorter than a stroke length of the valve body (11).
    Type: Grant
    Filed: July 1, 2015
    Date of Patent: November 5, 2019
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Hiroki Jinno, Tetsurou Gotou, Tsuyoshi Ito, Tooru Kitazaki
  • CONE VALVE
    Publication number: 20170314690
    Abstract: A cone valve of the present invention enables to extend a lifespan more than a conventional cone valve even if it is used as a check valve when feeding slurry containing highly abrasive coarse particles. A cone valve (1) used as a check valve when feeding slurry, comprising at least a valve body (11), a valve seat (13), and a spring (14) incorporated to make the valve body (11) contact the valve seat (14), wherein an entire length of the spring (14) is at least shorter than a stroke length of the valve body (11).
    Type: Application
    Filed: July 1, 2015
    Publication date: November 2, 2017
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Hiroki JINNO, Tetsurou GOTOU, Tsuyoshi ITO, Tooru KITAZAKI
  • WET SMELTING PLANT FOR NICKEL OXIDE ORE AND METHOD OF OPERATING THE SAME
    Publication number: 20130207325
    Abstract: A wet smelting plant for nickel oxide ore is provided in which, even when a serious trouble occurs in a processing facility, the preparation period of time of the processing facility required for discontinuing and restarting the operation can be minimized.
    Type: Application
    Filed: April 14, 2011
    Publication date: August 15, 2013
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Hiroyuki Mitsui, Osamu Nakai, Tooru Kitazaki, Moritarou Asatori