Patents by Inventor Yoshikazu Toyonaga

Yoshikazu Toyonaga 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).

  • Process for producing carbon black
    Patent number: 4631180
    Abstract: A process for producing carbon black in a reaction system comprising a first zone where a heating fuel material and an oxygen-containing gas are mixed, and a high temperature combustion gas stream is formed, a second zone where a hydrocarbon starting material is mixed to the high temperature combustion gas stream to form carbon black, and a third zone subsequent to and down-stream of the second zone, where the carbon black thus formed, is contacted with an activating agent to activate the carbon black, characterized in that steam is introduced as an activating agent to the third zone.
    Type: Grant
    Filed: September 19, 1985
    Date of Patent: December 23, 1986
    Assignee: Mitsubishi Chemical Industries Ltd.
    Inventors: Syushichi Yoshimura, Hiromu Kobayashi, Yoshikazu Toyonaga, Hozo Yamazaki, Masanori Karatsu