Patents by Inventor Shusuke Shimooka

Shusuke Shimooka 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).

  • Publication number: 20200156132
    Abstract: A method for producing a seamless metal pipe includes the steps of: preparing a billet having a diameter (B); heating the billet; forming, in a center part of a rear end of the heated billet, a hole including four grooves extending in an axial direction of the billet, the grooves each having a groove width (D) satisfying Formula (1), a groove height (H) satisfying Formula (2), and a groove depth (L1) satisfying Formula (3); and subjecting the billet provided with the hole to piercing-rolling from a front end thereof by means of a piercing machine. By this means, the generation of burrs and internal defects at the rear end of a hollow shell after piercing-rolling can be suppressed. 0.12?D/B?0.25 ??(1) 0.10?H/B?0.20 ??(2) 0.05?L1/B?0.
    Type: Application
    Filed: June 8, 2018
    Publication date: May 21, 2020
    Inventors: Kouji Yamane, Kazuhiro Shimoda, Yuji Inoue, Shusuke Shimooka, Yuichi Yamanari
  • Publication number: 20180023179
    Abstract: A method for producing a plug includes: a step of preparing a plug base metal having a concave portion along a circumferential direction in an outer peripheral surface; and an arc spraying step of spraying a spraying wire rod material onto the outer peripheral surface of the plug base metal by arc spraying to form films containing Fe and Fe oxides on the outer peripheral surface of the plug base metal. The arc spraying step includes: a separating step of separating the outer peripheral surface of the plug base metal into a plurality of regions along an axial direction; and a step of performing arc spraying separately in each of the regions. In the separating step, a boundary between the regions is set at the concave portion. In this way, peeling of films at a connecting portion is prevented, and the lifetime of the plug can be increased.
    Type: Application
    Filed: November 18, 2015
    Publication date: January 25, 2018
    Inventors: Kazuhiro Shimoda, Kouji Yamane, Yasuto Higashida, Yasuyoshi Hidaka, Yuji Inoue, Shusuke Shimooka