Patents by Inventor Masaaki Otakane

Masaaki Otakane 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).

  • Cold tool steel featuring high size stability, wear-resistance and machinability
    Patent number: 6060018
    Abstract: Cold tool steel having superior machinability, wear-resistance and minimized heat treatment size-change were obtained by specifying components and contents thereof, especially of C, Cr, Si, V and Mo, not by high-temperature soaking. Further, such prehardened cold tool steals as having excellent machinability even after heat-treatment together with minimum size-change were manufactured by further strictly specifying components, particularly of C, Si, Mn, Mo, V, and by specifying heat-treatment conditions.
    Type: Grant
    Filed: September 11, 1998
    Date of Patent: May 9, 2000
    Assignee: Nippon Koshuha Steel Co., Ltd.
    Inventors: Junji Yoshida, Yuji Machida, Keiichi Hayashida, Masaaki Otakane