Patents by Inventor Takaharu Konishi

Takaharu Konishi 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).

  • Method of welding titanium alloy parts with titanium insert
    Patent number: 4503314
    Abstract: A method of welding opposite end surfaces of two titanium alloy parts kept in alignment by a high energy-density welding process such as electron beam welding, laser beam welding or TIG arc welding, characterized by closely interposing an insert member of either practically pure titanium or Ti-Al binary alloy containing up to 3 Wt % of Al. Owing to thorough alloying of the inserted titanium with the constituents of the fused base metal, the weld metal in a weld joint obtained by this method is sufficiently high in both strength and toughness. By an optional postwelding heat treatment, the strength of the weld metal can further be enhanced.
    Type: Grant
    Filed: April 26, 1982
    Date of Patent: March 5, 1985
    Assignees: Nissan Motor Company, Limited, Hitachi, Ltd.
    Inventors: Tsuneo Kakimi, Megumi Nakanose, Hiroshi Satoh, Takaharu Konishi, Hisanao Kita, Takamitsu Nakazaki