Patents by Inventor Yutaka Ohmae

Yutaka Ohmae 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).

  • Surface-coated blast furnace tuyere made of copper or copper alloy and method of surface-coating the same
    Patent number: 4139673
    Abstract: The invention relates to a surface-coated blast furnace tuyere made of copper or copper alloy capable of sufficiently resisting heat attack and abrasion attack caused by the splashing of molten metal and slag. The invention also relates to a method of surface-coating the tuyere with advantages both in process steps and in economy.
    Type: Grant
    Filed: August 16, 1977
    Date of Patent: February 13, 1979
    Assignee: Nihon Karoraizu Kogyo Kabushiki Kaisha
    Inventor: Yutaka Ohmae