Patents by Inventor Kazuo Kiyonoga

Kazuo Kiyonoga 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 upgrading iron ore pellets
    Patent number: 4313757
    Abstract: In a process for hardening oxidizable green iron ore pellets in a closed horizontal grate or a circular grate furnace adapted therefor, and in which zone the flow of gases is in a downward direction towards the pellets on the grate, the improvement comprising:(a) covering the periphery of at least part of the zone with at least two hoods to provide a hooded area on each side of the top of the grate under the periphery of the grate passes, the distance between the inner edges of the periphery of the grate, as measured horizontally from inner edge to inner edge across the width of the grate along a line perpendicular to the path of the grate, being at least about 4 feet, and the hoods being located below the theoretical midpoint between the top of the pellet bed and the roof of the furnace; and(b) passing at least one gas stream consisting essentially of oxygen within each hooded area in such a manner that the stream flows in a downward direction towards and through the periphery of the bed of pellets on the gr
    Type: Grant
    Filed: December 19, 1977
    Date of Patent: February 2, 1982
    Assignee: Union Carbide Corporation
    Inventor: Kazuo Kiyonoga
  • Process for upgrading iron ore pellets
    Patent number: 4313756
    Abstract: In a process for hardening oxidizable green iron ore pellets in a closed grate-kiln furnace adapted therefor, and in which zone the flow of gases is in a downward direction towards the bed of pellets on the gratethe improvement comprising:(a) covering the periphery of at least part of the zone with at least two hoods to provide a hooded area on each side of the top of the grate under which the periphery of the grate passes, the distance between the inner edges of the periphery of the grate, as measured horizontally from inner edge to inner edge across the width of the grate along a line perpendicualr to the path of the grate, being at least about 4 feet, and the hoods being located below the theoretical midpoint between the top of the pellet bed and the roof of the furnace; and(b) passing at least one gas stream consisting essentially of oxygen within each hooded area in such a manner that the stream flows in a downward direction towards and through the periphery of the bed of pellets on the grate passing thr
    Type: Grant
    Filed: December 19, 1977
    Date of Patent: February 2, 1982
    Assignee: Union Carbide Corporation
    Inventor: Kazuo Kiyonoga