Patents by Inventor Masamitsu Hiyoshi

Masamitsu Hiyoshi 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).

  • 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