Patents by Inventor Yukiteru Asayama

Yukiteru Asayama 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).

  • High strength cobalt-free maraging steel
    Patent number: 4579590
    Abstract: High strength and toughness cobalt-free maraging steel containing, by mass, 11 to 15% Ni, 0.5 to 4% Cr, 0.5 to 5.5% Mo, 0.5 to 2% Ti, 0.05% max. C, 1% max. Mn and 0.5% max. Si, the balance consisting of iron and unavoidable impurities. The amounts of Ni, Mo and Ti in the steel have the following relationship to one another: ##EQU1## A process for heat treating this steel is also disclosed.
    Type: Grant
    Filed: March 7, 1984
    Date of Patent: April 1, 1986
    Assignee: Mitsubishi Jukogyo Kabushiki Kaisha
    Inventors: Yukiteru Asayama, Kazuaki Higuchi