Patents by Inventor Yohji Nakai

Yohji Nakai 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).

  • Coated electrode for arc welding
    Patent number: 4367394
    Abstract: A coated electrode for arc welding, comprising a steel wire core having a flux coating therein, the flux consisting essentially of 6-24% of TiO.sub.2, 2-15% of MgO, 10-30% of SiO.sub.2, 5-15% of Mn, 1-6% of Al.sub.2 O.sub.3, 20-60% of iron powder, not more than 2.5% of iron oxide and 0.5-2.5% of an organic component and having a weight ratio of MgO/(TiO.sub.2 +Al.sub.2 O.sub.3) in the range of 0.15-0.7, and a binder for the flux.
    Type: Grant
    Filed: March 5, 1981
    Date of Patent: January 4, 1983
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Yoshiya Sakai, Shigeo Nagaoka, Yohji Nakai, Takatoshi Tomoyasu