Patents by Inventor Koretoshi Fujishiro

Koretoshi Fujishiro 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).

  • Horizontal type coke ovens
    Patent number: 4216060
    Abstract: In a horizontal type coke oven, high temperature waste gas generated in a heating flue chamber and containing nitrogen oxides is discharged into a regenerator. There are provided nozzle openings for injecting ammonia or ammonia precursor to the high temperature waste gas at a position where the temperature of the waste gas is about 750.degree.-1000.degree. C. so as to reduce the nitrogen oxides in the waste gas with the ammonia or ammonia precursor.
    Type: Grant
    Filed: May 10, 1978
    Date of Patent: August 5, 1980
    Assignee: Mitsubishi Kasei Kogyo Kabushiki Kaisha
    Inventors: Hidemi Murata, Koretoshi Fujishiro, Shunsaku Hiraga, Masamitu Hiyoshi
  • Apparatus for preventing gas leakage from oven door of coke oven
    Patent number: 4145258
    Abstract: In a coke oven of the type comprising an oven opening, an oven door for closing the oven opening, a knife-edge surrounding the oven door for forming a seal for preventing leakage of oven gas, there are provided a conduit arranged along the outside periphery of the oven opening and provided with a plurality of gas ejection nozzles, and means for supplying compressed gas to the conduit. The gas ejection nozzles are directed such that gas is blasted to the seal.
    Type: Grant
    Filed: March 25, 1977
    Date of Patent: March 20, 1979
    Assignee: Mitsubishi Kasei Kogyo Kabushiki Kaisha
    Inventors: Koretoshi Fujishiro, Masamitsu Hiyoshi