Patents by Inventor Tadao Azami

Tadao Azami 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).

  • Stainless steel products, such as sheets and pipes, having a surface layer with an excellent corrosion resistance and production methods therefor
    Patent number: 4175163
    Abstract: A stainless steel pipe having a surface layer with excellent resistance against vanadium pentoxide attack experienced upon boiler heating tubes for power generation, corrosion by sulfates, corrosion by chlorides experienced upon boiler heating tubes for various burning furnace and high-temperature gas corrosion experienced upon tubes for heating furnaces in the chemical industry, and also relates to methods for forming the surface layer.
    Type: Grant
    Filed: March 24, 1977
    Date of Patent: November 20, 1979
    Assignee: Nippon Steel Corporation
    Inventors: Teruo Ikeno, Satoshi Kado, Yasuo Otoguro, Yasuhiko Miyoshi, Chuichi Kato, Tadao Azami